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Patents > National tech categories : DE 77h.6 or USPC 139/413

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Office:
Inventors:
None (13) · Christian Lorenzen (7) · Jakob Haw (7) · Hellmuth Hirth (4) · Paul Frederik Degn (2) · Lucien Chauvière (2) · Joseph Hofmann (2)
Inventor country:
Applicant is inventor:
Tech fields:
propeller (50) · propulsion (16) · Propellers (9) · None (8) · subsystem (6) · helicopter (5) · Airplane (5) · metal (4) · navigation (3) · marine (3)
Full specification filed date:
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CPCs:
None (16) · CPC B64C11/20 (6) · CPC B64C11/04 (6) · CPC B64C11/006 (5) · CPC B64C11/00 (5) · CPC B64C11/16 (3) · CPC B64C27/20 (3) · CPC B64C2700/6281 (3) · CPC B64C11/24 (3) · CPC B64C11/22 (2) · CPC B64C11/34 (2) · CPC B64C11/065 (2) · CPC B21D53/78 (2) · CPC B64C11/205 (2)
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Citations from after 1930:
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Showing below up to 79 results in range #1 to #79.

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