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Patents > Filing date: 1918 & National tech categories: None

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Inventor location:
None (512) · Indiana (6) · Pennsylvania (6) · Chicago (3) · Denver (2) · Allegheny county, PA (2) · Michigan (2) · Minneapolis, Minnesota (2) · Wilkinsburg, PA (2) · Oklahoma (2) · London (2) · Illinois (2) · New York state (2) · Ohio (2) · Surrey (2)
Applicant firm:
None (466) · Curtiss Aeroplane (18) · Blackburn Aeroplane and Motor Co. (7) · Westinghouse Electric & Manufacturing Company (7) · Société des Avions Louis Bréguet (5) · Dornier Metallbauten (4) · Moteurs Salmson (4) · Vickers (3) · Sperry Gyroscope Company (3) · John A. Roebling's Sons (2) · Etablissements Ch. Lefebvre & Cie (2) · Tarbox Safety Aircraft Company (2) · Société Anonyme des Établissements Nieuport (2) · Curtiss Aeroplane and Motor Corporation (2)
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Application number:
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Supplementary to patent:
None (522) · Patent GB-1917-126391 (3) · Patent FR-1917-494365 (2) · Patent IT-1917-03-16 Federico Caproni (2) · Patent IT-1915-150227 (2)
Related to aircraft:
Patent agent:
None (331) · John P. Tarbox (15) · Brewer & Son (13) · None (12) · A. M. & William Clark (9) · Marks & Clerk (9) · Boult, Wade & Tennant (6) · Munn & Co. (5) · Herbert Haddan & Co. (5) · Haseltine, Lake & Co. (5) · Phillipss (4) · Herbert H. Thompson (4)
National tech categories: (Click arrow to add another value)
IPCs:
None (329) · IPC B64C3/00 (21) · IPC B64C35/00 (15) · IPC B64C39/00 (14) · IPC B64C3/18 (14) · IPC B64C13/00 (11) · IPC B64C1/06 (10) · IPC B64C1/00 (10) · IPC B64C11/20 (10) · IPC B64C25/00 (10) · IPC B64B1/00 (8) · IPC B64C23/00 (7) · IPC B64C17/00 (7) · IPC B64C11/36 (7) · IPC B64C13/02 (5) · IPC B64C11/00 (5) · IPC B64C25/50 (4) · IPC B64C3/38 (4) · IPC B64C33/00 (4) · IPC B64C11/04 (4)
CPCs:
CPC B64C3/00 (41) · CPC B64C13/00 (30) · CPC B64C2700/6295 (29) · CPC B64C2700/6235 (24) · CPC B64C2700/6256 (23) · CPC B64C3/18 (23) · CPC B64C39/00 (22) · CPC B64C35/00 (20) · CPC B64C17/00 (18) · CPC B64C23/005 (17) · CPC B64C2001/0081 (17) · CPC B64B1/00 (17) · CPC B64C1/065 (17) · CPC B64C3/185 (14) · CPC B64C2700/6233 (13) · CPC B64B1/40 (12) · CPC B64C2001/0063 (11) · CPC B64C11/04 (10) · CPC B64C11/20 (10)
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Citations from after 1930:
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