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Patents > CPCs : CPC B64C33/00 or CPC B64C39/005 or CPC Y02T50/14

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Inventor location:
None (263) · Seine (4) · Michigan (2) · Seine-et-Oise (2) · Pennsylvania (2) · Paris (2) · London (2) · Chicago (2)
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Tech fields:
None (83) · propulsion (71) · flapping (52) · airplane (45) · frame (43) · navigation (37) · ornithopter (36) · hybrid (32) · wings (30) · stability (27) · propeller (26) · design (25) · LTA (23) · HTA (16) · rudder (14) · helicopter (13) · wheels (13) · takeoff (12) · lift (12)
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Supplementary to patent:
None (245) · Patent AT-1912-75092 (3) · Patent US-1916-1208684 (2) · Patent FR-1911-429078 (2) · Patent GB-1911-12188 (2) · Patent GB-1913-4191 (2) · Patent FR-1902-326476 (2) · Patent CA-1909-126457 (2)
Related to aircraft:
Patent agent:
None (106) · Munn & Co. (13) · None (12) · Armengaud jeune (6) · E. Blétry (5) · Victor J. Evans (4) · C. Blétry (4) · Weismann et Marx (3) · Marks & Clerk (3) · H. D. Fitzpatrick & Co. (3)
National tech categories:
None (106) · FR 6.4 (66) · USPC 244/20 (20) · USPC 244/11 (17) · USPC 244/70 (17) · USPC 244/9 (13) · FR 6.3 (8) · USPC 244/64 (6) · DE 77 (5) · USPC 244/22 (5) · USPC 244/39 (4) · USPC 244/19 (4) · USPC 244/119 (3)
CPCs: (Click arrow to add another value)
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Citations from after 1930:
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