Drilldown: Patents

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Patents > Office: DE & National tech categories : DE 77h.6 or USPC 244/93

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Inventors:
None (13) · Christian Lorenzen (7) · Jakob Haw (7) · Hellmuth Hirth (4) · Paul Frederik Degn (2) · Joseph Hofmann (2) · Lucien Chauvière (2)
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Tech fields:
propeller (50) · propulsion (16) · propellers (9) · None (8) · subsystem (6) · helicopter (5) · airplane (5) · metal (4) · navigation (3) · marine (3)
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Showing below up to 78 results in range #1 to #78.

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