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Patents > Year granted: 1915 & First filing: Yes

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Tech fields:
None (192) · airplane (74) · frame (31) · Stability (27) · wings (24) · construction (24) · LTA (22) · control (17) · design (16) · propulsion (15) · HTA (12) · propeller (9) · hydroaeroplane (9) · propellers (9) · hybrid (9) · Helicopter (8) · subsystem (8) · structure (8) · compartments (8) · automatic stability (7)
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Patent agent:
None (196) · Haseltine, Lake & Co. (6) · Marks & Clerk (6) · None (6) · J. Bonnet-Thirion et Breton (6) · Dupont et Elluin (6) · Munn & Co. (5) · Coquillat (5) · Armengaud jeune (4) · Victor J. Evans (4) · Brewer & Son (4) · Boult, Wade & Tennant (4) · E. W. Marshall (3) · H. D. Fitzpatrick & Co. (3) · Charles Dony (3) · A. M. Wilson (3) · Allen S. Davis(?) (3) · William L. Hall (3) · J. Warner Beckstrom (3) · Hippolyte Josse (3)
National tech categories:
None (127) · FR 6.4 (50) · IT 8 (15) · USPC 244/90R (12) · USPC 244/233 (10) · USPC 244/13 (7) · USPC 244/91 (7) · USPC 244/113 (6) · USPC 244/65 (5) · DE 77h.5 (5) · USPC 244/100R (5) · USPC 244/80 (5) · USPC 244/87 (5) · USPC 244/48 (5) · USPC 244/45R (5)
IPCs:
None (225) · IPC B64C39/00 (16) · IPC B64C17/00 (14) · IPC B64C1/00 (13) · IPC B64C3/00 (13) · IPC B64C35/00 (10) · IPC B64B1/00 (9) · IPC B64C23/00 (8) · IPC B64C13/00 (8) · IPC B64C27/04 (7) · IPC B64C3/54 (6) · IPC B64D27/00 (4) · IPC B64D17/00 (4) · IPC B64C25/00 (4) · IPC B64C3/38 (4) · IPC B64C3/50 (3) · IPC B64D1/04 (3)
CPCs:
None (32) · CPC B64C17/00 (29) · CPC B64B1/00 (26) · CPC B64C2700/6295 (25) · CPC B64C13/00 (24) · CPC B64C23/005 (16) · CPC B64C3/00 (16) · CPC B64C35/00 (15) · CPC B64C3/385 (11) · CPC B64C39/00 (11) · CPC B62C5/04 (9) · CPC B64C2700/6235 (8) · CPC B64C2700/6218 (8) · CPC B64C2700/6281 (8) · CPC B64C2700/6274 (7) · CPC B64C11/16 (7)
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Citations from after 1930:
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