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Patents > National tech categories: None & IPCs : IPC B64C11/22 or IPC B64C23/00

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Office:
Inventors:
None (2) · Alfred E. Wunderlich (2) · Douglas Dobbins (2) · Albert Ernest Downing (2)
Inventor country:
Applicant person:
None (7) · Douglas Dobbins (2) · John Day De Prez (2) · Albert Ernest Downing (2) · Alfred E. Wunderlich (2)
Applicant is inventor:
Tech fields:
None (28) · airplane (17) · Frame (7) · Propulsion (7) · Design (6) · whole (5) · Hybrid (5) · propellers (5) · construction (4) · navigation (4) · wings (4) · propeller (3) · stability (3) · lift (3) · helicopter (3)
Full specification filed date:
Application number:
None (3)
Granted:
Publication date:
Related to aircraft:
Patent agent:
None (11) · None (4) · W. P. Thompson & Co. (4) · Boult, Wade & Tennant (3) · Marks & Clerk (3) · Hy. Fairbrother (2) · Lockwood & Lockwood (2) · Edward Evans & Co. (2) · Hughes & Young (2) · Herbert Haddan & Co. (2) · Cruikshank & Fairweather, Limited (2) · Carpmael & Co. (2)
National tech categories: (Click arrow to add another value)
IPCs: (Click arrow to add another value)
First filing:
Citations from after 1930:
Number of diagram pages:

Showing below up to 70 results in range #1 to #70.

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