Drilldown: Patents

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Patents > Inventor country : AH or None & Granted: Yes & Number of text pages: 2-3

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Office:
Inventors:
None (10) · Waldemar Porak (2) · August Riedinger (2) · Josef Homola (2) · Georg Wellner (2) · George Tilghman Richards (2) · Albert Francis Zahm (2)
Inventor country: (Click arrow to add another value)
Applicant person:
None (41) · George Tilghman Richards (2) · Waldemar Porak (2)
Applicant is inventor:
Tech fields:
airplane (20) · Frame (17) · propulsion (15) · None (13) · navigation (12) · LTA (11) · subsystem (9) · propeller (9) · stability (8) · Design (7) · balloon (7) · safety (7) · Aerodynamics (6) · wings (6) · flapping (5) · propellers (5) · control (5) · construction (5)
Full specification filed date:
Granted: (Click arrow to add another value)
Related to aircraft:
IPCs:
None (53) · IPC B64C39/00 (4) · IPC B64C13/00 (3) · IPC B64C31/06 (2) · IPC B64C23/00 (2) · IPC B64C3/38 (2)
CPCs:
None (50) · CPC B64C13/00 (5) · CPC B64C39/00 (3) · CPC B64C2700/6256 (2) · CPC B64C3/38 (2) · CPC B64C33/00 (2) · CPC A63H27/08 (2) · CPC B64C23/005 (2) · CPC B64C2700/6295 (2)
First filing:
Citations from after 1930:
Number of text pages:
Number of diagram pages:

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