Drilldown: Patents

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Patents > Patent agent : Richardson or Victor J. Evans & Number of text pages: 2-3

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Office:
Inventors:
George Lehberger (3) · Ralph P. Fox (2)
Inventor country:
Applicant person:
George Lehberger (3) · Ralph P. Fox (2)
Applicant is inventor:
Tech fields:
None (15) · airplane (14) · stability (13) · frame (13) · propeller (11) · rudder (9) · navigation (9) · propulsion (7) · parachute (5) · hybrid (5) · safety (5) · automatic stability (4) · helicopter (4) · airfoil (4) · Airship (3) · LTA (3) · flapping (3) · control (3) · takeoff (3)
Full specification filed date:
Application number:
None (10)
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Related to aircraft:
Patent agent: (Click arrow to add another value)
National tech categories:
None (11) · USPC 244/80 (8) · USPC 244/119 (4) · USPC 244/45R (3) · USPC 244/35R (3) · USPC 244/79 (3) · USPC 244/66 (2) · USPC 244/139 (2) · USPC 244/131 (2) · USPC 244/48 (2) · USPC 244/87 (2) · USPC 244/104R (2) · USPC 244/73R (2) · USPC 244/100R (2)
CPCs:
CPC B64C17/00 (11) · CPC B64C23/005 (4) · CPC B64B1/00 (4) · CPC B64C17/06 (3) · CPC B64C3/385 (3) · CPC B64C27/82 (3) · CPC B64C11/48 (3) · CPC B64C13/00 (3) · CPC B64C33/02 (2) · CPC B64C9/00 (2) · CPC B63H1/12 (2) · CPC B64C29/0033 (2) · CPC B64C2700/6295 (2) · CPC B64C39/08 (2) · CPC B64C39/005 (2) · CPC Y02E10/74 (2) · CPC Y02E10/28 (2)
First filing:
Cites these patents:
Citations from after 1930:
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