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Patents > Year filed: 1918 & Supplementary to patent : Patent US-1918-1433728 or None

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None (507) · Indiana (6) · Pennsylvania (5) · Berlin (3) · Oklahoma (3) · Chicago (3) · Denver (2) · Michigan (2) · Minneapolis, Minnesota (2) · Minnesota (2) · Illinois (2) · New York state (2) · Seine (2) · London (2) · Allegheny county, PA (2) · Surrey (2) · Wilkinsburg, PA (2)
Applicant firm:
None (443) · Curtiss Aeroplane (18) · Westinghouse Electric & Manufacturing Company (7) · Blackburn Aeroplane and Motor Co. (7) · Moteurs Salmson (5) · Société des Avions Louis Bréguet (4) · Helix Propeller G.m.b.H. (4) · Sperry Gyroscope Company (3) · Mercur Flugzeugbau (3) · Curtiss Aeroplane and Motor Corporation (3) · Tarbox Safety Aircraft Company (2) · Société Anonyme des Établissements Nieuport (2) · Otwi-Werke m.b.H. (2) · Luftschiffbau Schütte-Lanz (2) · John A. Roebling's Sons (2) · Ballonfabrik Augsburg A.G. (2) · B.F. Goodrich company (2)
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None (314) · John P. Tarbox (16) · Brewer & Son (13) · None (11) · A. M. & William Clark (8) · Boult, Wade & Tennant (5) · Marks & Clerk (5) · Armengaud jeune (5) · Phillipss (4) · Munn & Co. (4) · Lavoix et Mosès (4) · Haseltine, Lake & Co. (4) · Herbert H. Thompson (4)
National tech categories:
None (444) · FR 6.4 (30) · DE 77h.6 (12) · DE 77h.5 (12) · DE 77h.9 (6) · DE 77h.7 (6) · DE 77h.15 (3) · USPC 244/87 (2) · USPC 244/50 (2) · USPC 244/17.21 (2) · USPC 244/119 (2) · USPC 244/22 (2)
IPCs:
None (274) · IPC B64C3/00 (31) · IPC B64C35/00 (16) · IPC B64C13/00 (16) · IPC B64C1/00 (15) · IPC B64C39/00 (14) · IPC B64C3/18 (14) · IPC B64C17/00 (12) · IPC B64C23/00 (10) · IPC B64C25/00 (10) · IPC B64B1/00 (10) · IPC B64C11/20 (8) · IPC B64C11/04 (7) · IPC B64C11/00 (7) · IPC B64C1/06 (6) · IPC B64C11/36 (5) · IPC B64C3/26 (5)
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