Drilldown: Patents

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Patents > Patent agent: None & CPCs : CPC B64B1/00 or CPC B64C33/00

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Tech fields:
LTA (140) · None (95) · propulsion (57) · frame (45) · navigation (43) · balloon (29) · propeller (27) · dirigible (23) · airship (21) · design (17) · hybrid (16) · stability (15) · safety (15) · car (15) · flapping (14) · rudder (13) · wings (13) · ornithopter (12) · airplane (12) · compartments (11)
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None (75)
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National tech categories:
None (92) · FR 6.4 (61) · USPC 244/30 (30) · DE 77 (22) · FR 6.3 (20) · DE 77h.2 (12) · USPC 244/26 (11) · USPC 244/11 (7) · USPC 24/713.8 (6) · USPC 244/28 (6) · USPC 244/125 (6) · USPC 244/25 (5) · USPC 244/99 (4) · USPC 244/127 (4) · USPC 244/29 (3) · DE 77h (3) · USPC 244/97 (3)
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