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Patents > Year filed: 1909 & Office : AT or BE or CA or NO or US & Family year: 1900 - 1909 & Citations from after 1930: 1-2

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propeller (10) · propulsion (9) · airplane (9) · None (6) · frame (6) · stability (6) · helicopter (6) · wheels (5) · rudder (5) · LTA (5) · car (5) · safety (4) · landing (4) · parachute (3) · cargo (3) · HTA (3) · navigation (3)
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None (3) · USPC 244/65 (3) · USPC 244/80 (2) · USPC 416/129 (2) · USPC 244/20 (2)
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Showing below up to 38 results in range #1 to #38.

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