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Patents > National tech categories : USPC 244/22 or USPC 244/87 & Number of text pages: 3-6

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Office:
Inventors:
Ruter William Springer (2) · Charles I. Matson (2) · Julius Uherkovich de Uherkócz (2)
Inventor country:
Applicant person:
None (3) · Charles I. Matson (2) · Ruter William Springer (2) · Julius Uherkovich de Uherkócz (2)
Applicant is inventor:
Tech fields:
flapping (18) · frame (17) · airplane (15) · ornithopter (12) · None (10) · propeller (10) · rudder (9) · Propulsion (9) · navigation (9) · stability (8) · wheels (7) · hybrid (7) · airfoil (6) · marine (5) · wings (5) · parachute (4) · landing (4) · takeoff (4) · construction (4)
Full specification filed date:
Application number:
None (7)
Granted:
Publication date:
Related to aircraft:
Patent agent:
None (9) · C. A. Snow & Co. (4) · Munn & Co. (3) · F. N. Gillent (2) · Victor J. Evans (2) · Frederick Benjamin (2) · Foster, Freeman, Watson & Coit (2)
National tech categories: (Click arrow to add another value)
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Cites these patents:
Citations from after 1930:
Number of text pages:
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