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Patents > National tech categories : CH 129b or DE 77h.6 & Number of figures: 1-4

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Inventors:
None (10) · Jakob Haw (6) · Christian Lorenzen (6) · Hellmuth Hirth (3) · Carl Wilhelm Paul (2) · Carl Franz Hubert Hertel (2) · Joseph Hofmann (2) · Joseph Wetterwald (2) · Lucien Chauvière (2)
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None (25) · Jakob Haw (4) · Lucien Chauvière (2) · Hellmuth Hirth (2) · Hans Reissner (2) · Joseph Hofmann (2) · Joseph Wetterwald (2) · Carl Franz Hubert Hertel (2) · Carl Wilhelm Paul (2) · Christian Lorenzen (2)
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propeller (39) · airplane (21) · propulsion (12) · propellers (11) · stability (10) · subsystem (9) · design (8) · automatic stability (8) · frame (7) · whole (6) · Tragfläche (6) · Construction (6) · None (5) · helicopter (4) · steering (3) · wheels (3) · Aerodynamics (3) · heavier-than-air (3) · metal (3) · hybrid (3)
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