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Patents > National tech categories : USPC 244/22 or USPC 244/52 & IPCs: None

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Office:
Inventors:
Charles P. Fest (2) · Louis Coutant Badeau (2) · Theodore Kornbrodt (2) · Charles I. Matson (2)
Inventor country:
Applicant person:
None (3) · Theodore Kornbrodt (2) · Louis Coutant Badeau (2) · Charles P. Fest (2) · Charles I. Matson (2)
Applicant firm:
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Applicant is inventor:
Tech fields:
frame (22) · flapping (19) · propulsion (18) · ornithopter (17) · None (16) · navigation (15) · propeller (12) · LTA (12) · rudder (9) · hybrid (7) · airplane (7) · stability (6) · takeoff (6) · safety (5) · airship (5) · parachute (4) · wheels (4) · wings (4) · car (4) · balloon (4)
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None (9)
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IPCs: (Click arrow to add another value)
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Citations from after 1930:
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Showing below up to 68 results in range #1 to #68.

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