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Patents > Family year: 1912 & First filing: No & Number of text pages: 4-6

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Tech fields:
airplane (16) · None (7) · stability (7) · Propulsion (6) · design (6) · automatic stability (5) · military (5) · Helicopter (4) · lift (4) · propellers (4) · Airship (4) · hybrid (3) · control (3) · aerodynamics (3) · instrument (3) · aiming (3) · projectile (3) · HTA (3) · rudder (3)
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CPC B64C17/00 (8) · None (4) · CPC B64C2700/6218 (3) · CPC B64C39/00 (3) · CPC B64C2700/6295 (3) · CPC B64C33/00 (2) · CPC B64C3/42 (2) · CPC B64C3/385 (2) · CPC B64C33/02 (2) · CPC F41G3/24 (2)
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