Drilldown: Patents

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Patents > Year filed: 1900 - 1999 & Inventor country: None & Patent agent: None

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Tech fields:
None (354) · airplane (31) · propulsion (24) · stability (16) · LTA (15) · navigation (11) · propeller (11) · frame (10) · balloons (10) · subsystem (9) · Design (9) · propellers (8) · control (7) · wings (7) · balloon (7) · safety (7) · construction (5) · airship (5) · rudder (5) · piloting (5)
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National tech categories:
None (424) · DE 77h.5 (7) · HU V/h (7) · IT 8 (5) · MX F. III (5) · AT 77d (4) · BE K (4) · FR 6.4 (4) · AR 21 (3) · DE 77h (3) · RU 62b (3) · MX F. II (2) · AR vehicles (2) · RU Group V (2) · DE 77h.9 (2)
IPCs:
None (463) · IPC B64C11/00 (4) · IPC B64C39/00 (4) · IPC B63H1/12 (3) · IPC B64C3/00 (3) · IPC B64B1/58 (2) · IPC B64C11/32 (2) · IPC B64C3/56 (2) · IPC F41G3/24 (2) · IPC B64B1/00 (2) · IPC B64D27/00 (2) · IPC B64C31/06 (2) · IPC B64C33/02 (2)
CPCs:
None (220) · CPC B64C39/00 (28) · CPC B64C2700/6295 (25) · CPC B64C17/00 (19) · CPC B64C3/00 (18) · CPC B64C11/006 (17) · CPC B64C23/005 (15) · CPC B64C2700/6233 (14) · CPC B64C2700/6212 (11) · CPC B64C35/00 (10) · CPC B64C33/00 (10) · CPC B62C5/04 (10) · CPC B64C13/00 (9) · CPC B64C2700/6274 (9) · CPC B64C2700/6256 (8) · CPC B64B1/58 (7) · CPC B64C33/02 (7) · CPC B64C3/385 (6) · CPC B64F2700/6261 (6) · CPC B64C1/00 (6)
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