Steinway & Sons - Technical Info - Patents Acquired from 1925 to 1949

Patents Acquired from 1925 to 1949

Application Inventor(s) Title; Invention Claimed;
Concordance Letters Patent

File Date Number Grant Date Number

Feb 18, 1931
516,547
Frederick A. Vietor
"Piano Key Mounting"; key mounting for accelerated action; corresponds to Ger. 564,549
Oct 13, 1931
1,826,848

Feb 27, 1931 518,671 Stanley Weber "Piano String-Frame"; cast iron plate having one-piece rib with hardened capo tasto bar; see 1,941,423 issued on divisional application Jul 19, 1932 1,867,788

May 22, 1931 --- Frederick A. Vietor "Key Mounting for Piano Action"; corresponds to 1,826,848 Nov 19, 1932 Ger. 564,549

Feb 27, 1931
Nov 24, 1931 518,671
577,072 Stanley Weber "Method of Heat Treating Piano String Frames"; method of electrically heat treating plate; see 1,867,788 issued on parent application Dec 26, 1933 1,941,423

Jan 09, 1934 705,929 Theodore E. Steinway "Piano Construction"; improved construction of agraffe pin Jul 03, 1934 1,965,360

Dec 14, 1933 702,329 Paul H. Bilhuber "Piano Scale"; duplex scale; corresponds to Ger. 647,554 Sep 04, 1934 1,972,511

Feb 23, 1935 7,888 Paul H. Bilhuber "Piano, and More Particularly to the Mounting of Strings Thereon"; agraffe and means for mounting strings thereon Dec 31, 1935 2,025,933

May 18, 1934 725,196 Frederick A. Vietor "Piano Keyboard"; balance key rail pin for accelerated action Feb 25, 1936 2,031,748

Feb 23, 1935 7,887 Paul H. Bilhuber "Piano and Like Musical Instruments Using Strings"; steel capo tasto bar rib Jul 21, 1936 2,048,368

Mar 30, 1935 13,836 Paul H. Bilhuber "Soundboard for Pianos and Other Instruments or Devices Using Soundboards"; diaphragmatic soundboard and mounting therefor Aug 18, 1936 2,051,633

Mar 07, 1936 67,627 Paul H. Bilhuber "Soundboard for Pianos"; diaphragmatic soundboard for grand piano and mounting therefor Feb 09, 1937 2,070,391

Feb 19, 1937 67,734 William Zaiser "Design for a Piano Case"; design for upright piano case Apr 27, 1937 Des. 104,302

Nov 03, 1934 --- Paul H. Bilhuber "Keyboard Instrument, Such As A Piano, Clavier, Grand Piano, Etc."; duplex scale; corresponds to 1,972,511 Jul 07, 1937 Ger. 647,554

Nov 24, 1936 112,558 Paul H. Bilhuber "Soundboard for Pianos"; soundboard comprising main and augmenting portions for grand piano; corresponds to Ger. 707,484 Feb 08, 1938 2,107,659

Jul 16, 1936 90,853 Paul H. Bilhuber "Acoustic Translating Device"; loudspeaker mounting Jun 21, 1938 2,121,008

Jun 22, 1938 77,987 Everett Worthington "Design for an Upright Piano" Aug 30, 1938 Des. 111,101

Jan 13, 1938 184,875 Dunbar Beck "Piano"; sound deflector for grand piano top Nov 01, 1938 2,134,680

Sep 23, 1938 861,453 Steinway & Sons (Hamburg, Germany) "Touch Weight Regulating Device" Nov 11, 1938 Geb. 1,450,252

Dec 17, 1938 81,855 Eric Gugler "Design for a Piano Case"; design for The White House piano case Mar 07, 1939 Des. 113,628

Dec 17, 1938 81,856 Eric Gugler "Design for a Lyre for a Piano"; design for The White House piano lyre Mar 07, 1939 Des. 113,629

Dec 17, 1938 81,857 Eric Gugler "Design for a Piano Leg"; design for The White House piano leg Mar 07, 1939 Des. 113,630

Dec 17, 1938 81,858 Eric Gugler "Design for a Grand Piano"; overall design for The White House piano Mar 07, 1939 Des. 113,631

Aug 15, 1937 179,605 Paul H. Bilhuber "Keyboard Instrument, Such As a Piano, Clavier, Grand Piano, Etc."; return soundboard; corresponds to 2,107,659 Jun 23, 1941 Ger. 707,484

Apr 29, 1943 484,987 Paul H. Bilhuber "Operating Means for Piano Actions"; mechanism to permit raising the height of the keyboard in an upright piano Jan 11, 1944 2,338,992

Aug 07, 1943 497,770 Paul H. Bilhuber "Piano Pin Block"; combined pin block and plate, the undersurface of the latter having irregular projections and depressions, the upper surface of the former being bonded to a layer whose exposed surface is registrable with the plate Jan 25, 1944 2,339,752

Jul 03, 1943 493,443 George Beiter "Securing Means for Adhesively Held Parts"; securing means for adhesively held parts in the construction of gliders or aeroplanes Mar 28, 1944 2,345,025

Nov 11, 1943 509,825 Michael Schutz "Cage Nut Tool"; tool for clenching cage nuts to plywood skins used in glider or aeroplane constructions Sep 04, 1945 2,384,347

Nov 08, 1943 507,895 Paul H. Bilhuber "Moulded Article Producing Apparatus"; high frequency molding method; corresponds to Brit. 585,870 Sep 25, 1945 Can. 430,209

Nov 29, 1943 508,546 Paul H. Bilhuber "Strip Element Gluing Method and Apparatus"; apparatus for continuous- feed edge-gluing of strip elements; corresponds to 2,453,185 Nov 27, 1945 Can. 431,548

May 04, 1944 8428/44 Paul H. Bilhuber "Improvements in or Relating to the Treatment of Wood"; diaphragmatic soundboard and method of treating wood for fabricating same; corresponds to 2,529,862 and Can. 489,670 Feb 12, 1947 Brit. 585,591

May 04, 1944 8429/44 Paul H. Bilhuber "Improvements in or Relating to Method and Apparatus for Producing Molded Products"; high frequency molding; corresponds to Can. 430,209 Feb 27, 1947 Brit. 585,870

Sep 10, 1943 501,792 Paul H. Bilhuber "Apparatus for Edge Gluing Strip Elements"; see Can. 431,548 Nov 09, 1948 2,453,185

Jun 22, 1943 491,782 Paul H. Bilhuber "Diaphragm Unit and Method of Fabricating Same"; diaphragmatic soundboard and method of fabricating same; corresponds to Can. 489,670 and Brit. 585,591 Nov 14, 1950 2,529,862

Nov 15, 1943 508,084 Paul H. Bilhuber "Diaphragm Unit and Method of Fabricating Same"; diaphragmatic soundboard and method of fabricating same; corresponds to 2,529,862 and Brit. 585,591 Jan 13, 1953 Can. 489,670

Application		Inventor(s)	Title; Invention Claimed; Concordance	Letters Patent
File Date	Number			Grant Date	Number
Feb 18, 1931	516,547	Frederick A. Vietor	"Piano Key Mounting"; key mounting for accelerated action; corresponds to Ger. 564,549	Oct 13, 1931	1,826,848
Feb 27, 1931	518,671	Stanley Weber	"Piano String-Frame"; cast iron plate having one-piece rib with hardened capo tasto bar; see 1,941,423 issued on divisional application	Jul 19, 1932	1,867,788
May 22, 1931	---	Frederick A. Vietor	"Key Mounting for Piano Action"; corresponds to 1,826,848	Nov 19, 1932	Ger. 564,549
Feb 27, 1931 Nov 24, 1931	518,671 577,072	Stanley Weber	"Method of Heat Treating Piano String Frames"; method of electrically heat treating plate; see 1,867,788 issued on parent application	Dec 26, 1933	1,941,423
Jan 09, 1934	705,929	Theodore E. Steinway	"Piano Construction"; improved construction of agraffe pin	Jul 03, 1934	1,965,360
Dec 14, 1933	702,329	Paul H. Bilhuber	"Piano Scale"; duplex scale; corresponds to Ger. 647,554	Sep 04, 1934	1,972,511
Feb 23, 1935	7,888	Paul H. Bilhuber	"Piano, and More Particularly to the Mounting of Strings Thereon"; agraffe and means for mounting strings thereon	Dec 31, 1935	2,025,933
May 18, 1934	725,196	Frederick A. Vietor	"Piano Keyboard"; balance key rail pin for accelerated action	Feb 25, 1936	2,031,748
Feb 23, 1935	7,887	Paul H. Bilhuber	"Piano and Like Musical Instruments Using Strings"; steel capo tasto bar rib	Jul 21, 1936	2,048,368
Mar 30, 1935	13,836	Paul H. Bilhuber	"Soundboard for Pianos and Other Instruments or Devices Using Soundboards"; diaphragmatic soundboard and mounting therefor	Aug 18, 1936	2,051,633
Mar 07, 1936	67,627	Paul H. Bilhuber	"Soundboard for Pianos"; diaphragmatic soundboard for grand piano and mounting therefor	Feb 09, 1937	2,070,391
Feb 19, 1937	67,734	William Zaiser	"Design for a Piano Case"; design for upright piano case	Apr 27, 1937	Des. 104,302
Nov 03, 1934	---	Paul H. Bilhuber	"Keyboard Instrument, Such As A Piano, Clavier, Grand Piano, Etc."; duplex scale; corresponds to 1,972,511	Jul 07, 1937	Ger. 647,554
Nov 24, 1936	112,558	Paul H. Bilhuber	"Soundboard for Pianos"; soundboard comprising main and augmenting portions for grand piano; corresponds to Ger. 707,484	Feb 08, 1938	2,107,659
Jul 16, 1936	90,853	Paul H. Bilhuber	"Acoustic Translating Device"; loudspeaker mounting	Jun 21, 1938	2,121,008
Jun 22, 1938	77,987	Everett Worthington	"Design for an Upright Piano"	Aug 30, 1938	Des. 111,101
Jan 13, 1938	184,875	Dunbar Beck	"Piano"; sound deflector for grand piano top	Nov 01, 1938	2,134,680
Sep 23, 1938	861,453	Steinway & Sons (Hamburg, Germany)	"Touch Weight Regulating Device"	Nov 11, 1938	Geb. 1,450,252
Dec 17, 1938	81,855	Eric Gugler	"Design for a Piano Case"; design for The White House piano case	Mar 07, 1939	Des. 113,628
Dec 17, 1938	81,856	Eric Gugler	"Design for a Lyre for a Piano"; design for The White House piano lyre	Mar 07, 1939	Des. 113,629
Dec 17, 1938	81,857	Eric Gugler	"Design for a Piano Leg"; design for The White House piano leg	Mar 07, 1939	Des. 113,630
Dec 17, 1938	81,858	Eric Gugler	"Design for a Grand Piano"; overall design for The White House piano	Mar 07, 1939	Des. 113,631
Aug 15, 1937	179,605	Paul H. Bilhuber	"Keyboard Instrument, Such As a Piano, Clavier, Grand Piano, Etc."; return soundboard; corresponds to 2,107,659	Jun 23, 1941	Ger. 707,484
Apr 29, 1943	484,987	Paul H. Bilhuber	"Operating Means for Piano Actions"; mechanism to permit raising the height of the keyboard in an upright piano	Jan 11, 1944	2,338,992
Aug 07, 1943	497,770	Paul H. Bilhuber	"Piano Pin Block"; combined pin block and plate, the undersurface of the latter having irregular projections and depressions, the upper surface of the former being bonded to a layer whose exposed surface is registrable with the plate	Jan 25, 1944	2,339,752
Jul 03, 1943	493,443	George Beiter	"Securing Means for Adhesively Held Parts"; securing means for adhesively held parts in the construction of gliders or aeroplanes	Mar 28, 1944	2,345,025
Nov 11, 1943	509,825	Michael Schutz	"Cage Nut Tool"; tool for clenching cage nuts to plywood skins used in glider or aeroplane constructions	Sep 04, 1945	2,384,347
Nov 08, 1943	507,895	Paul H. Bilhuber	"Moulded Article Producing Apparatus"; high frequency molding method; corresponds to Brit. 585,870	Sep 25, 1945	Can. 430,209
Nov 29, 1943	508,546	Paul H. Bilhuber	"Strip Element Gluing Method and Apparatus"; apparatus for continuous- feed edge-gluing of strip elements; corresponds to 2,453,185	Nov 27, 1945	Can. 431,548
May 04, 1944	8428/44	Paul H. Bilhuber	"Improvements in or Relating to the Treatment of Wood"; diaphragmatic soundboard and method of treating wood for fabricating same; corresponds to 2,529,862 and Can. 489,670	Feb 12, 1947	Brit. 585,591
May 04, 1944	8429/44	Paul H. Bilhuber	"Improvements in or Relating to Method and Apparatus for Producing Molded Products"; high frequency molding; corresponds to Can. 430,209	Feb 27, 1947	Brit. 585,870
Sep 10, 1943	501,792	Paul H. Bilhuber	"Apparatus for Edge Gluing Strip Elements"; see Can. 431,548	Nov 09, 1948	2,453,185
Jun 22, 1943	491,782	Paul H. Bilhuber	"Diaphragm Unit and Method of Fabricating Same"; diaphragmatic soundboard and method of fabricating same; corresponds to Can. 489,670 and Brit. 585,591	Nov 14, 1950	2,529,862
Nov 15, 1943	508,084	Paul H. Bilhuber	"Diaphragm Unit and Method of Fabricating Same"; diaphragmatic soundboard and method of fabricating same; corresponds to 2,529,862 and Brit. 585,591	Jan 13, 1953	Can. 489,670