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Patents > Year filed: 1909 & Office: US & Grant date: 1900 - 1999 & Citations from after 1930: 1-2

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Inventors:
George Herbert Kellogg (2) · Rudolph G. Dressler (2) · Christopher John Lake (2)
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Applicant person:
George Herbert Kellogg (2) · Rudolph G. Dressler (2) · Christopher John Lake (2)
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Tech fields:
propeller (11) · propulsion (10) · airplane (10) · None (8) · stability (8) · frame (7) · LTA (6) · helicopter (6) · wheels (6) · rudder (6) · safety (5) · landing (5) · car (5) · navigation (4) · HTA (3) · cargo (3) · parachute (3) · flapping (3)
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USPC 244/65 (3) · None (2) · USPC 244/45R (2) · USPC 416/129 (2) · USPC 244/80 (2) · USPC 244/20 (2)
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