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Patents > Citations from after 1930: 1-2

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Tech fields:
None (87) · LTA (55) · stability (53) · propeller (48) · propulsion (47) · airplane (45) · frame (44) · navigation (31) · helicopter (22) · rudder (21) · parachute (19) · control (19) · car (18) · wheels (18) · aerial propeller (17) · safety (16) · marine (14) · landing (13)
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Supplementary to patent:
None (402) · Patent FR-1916-501550 (2)
Related to aircraft:
National tech categories:
None (189) · FR 6.4 (36) · USPC 244/80 (9) · USPC 244/66 (8) · USPC 244/22 (7) · USPC 244/90R (6) · USPC 244/20 (6) · USPC 244/73R (6) · USPC 244/64 (6) · USPC 244/3.23 (5) · USPC 244/35R (5) · USPC 244/32 (5) · USPC 244/70 (5) · USPC 244/177 (5)
IPCs:
None (245) · IPC B64C3/00 (19) · IPC B64B1/00 (19) · IPC B64C39/00 (18) · IPC B64C1/00 (8) · IPC B64C17/00 (8) · IPC B64C25/00 (8) · IPC B64C31/06 (7) · IPC B64C33/00 (7) · IPC B64C35/00 (6) · IPC F42B10/00 (6) · IPC B64C3/38 (5) · IPC B64C3/18 (5) · IPC B64C3/54 (5) · IPC B64B1/62 (5) · IPC B64C23/00 (5) · IPC B64C31/00 (4) · IPC B64C13/00 (4) · IPC B64C13/12 (4) · IPC B64C13/24 (4)
CPCs:
CPC B64B1/00 (24) · CPC B64C17/00 (22) · CPC B64C39/005 (21) · CPC B64C27/54 (20) · CPC B64C11/48 (18) · CPC B64C13/00 (18) · CPC B64C23/005 (17) · None (17) · CPC B64C3/00 (16) · CPC B64C2700/6295 (14) · CPC B64C11/006 (13) · CPC B64C11/04 (11) · CPC B64C2700/6235 (11) · CPC B64C33/02 (10) · CPC B64C27/82 (9) · CPC F16B2/02 (8) · CPC Y10T403/4677 (8) · CPC B64B1/40 (8) · CPC B64C35/00 (8)
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Citations from after 1930:
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