Drilldown: Patents

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Patents > Supplementary to patent: None & Number of claims: 8-12 & Number of diagram pages: 6-30

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Office:
Inventors:
John Thomas Simpson (2) · John William Oman (2) · Frederick James Hargreaves (2)
Inventor country:
Applicant person:
None (2) · Frederick James Hargreaves (2) · John William Oman (2) · John Thomas Simpson (2)
Applicant is inventor:
Tech fields:
stability (13) · airplane (12) · frame (8) · None (7) · propeller (5) · navigation (5) · wheels (4) · hybrid (4) · LTA (4) · flapping (3) · takeoff (3) · rudder (3) · propulsion (3) · car (3) · marine (3) · landing (3)
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Supplementary to patent: (Click arrow to add another value)
Related to aircraft:
National tech categories:
None (13) · USPC 244/139 (2) · USPC 244/96 (2) · USPC 244/80 (2) · USPC 244/233 (2) · USPC 244/221 (2) · USPC 244/177 (2) · USPC 244/131 (2) · FR 6.4 (2)
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Cites these patents:
Citations from after 1930:
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