Drilldown: Patents

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Patents > Year granted: 1912 & Family year: 1900 - 1999 & Citations from after 1930: 1

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George Herbert Kellogg (2)
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George Herbert Kellogg (2)
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None (9) · airplane (9) · stability (5) · propeller (5) · wheels (4) · frame (3) · LTA (3) · HTA (3) · landing (3) · balance (3) · automatic stability (2) · parachute (2) · aerial propeller (2) · takeoff (2) · safety (2)
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