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Patents > Patent agent : Dr. Forrer & Hug or Weismann et Marx & First filing: Yes

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Tech fields:
airplane (18) · control (12) · frame (10) · chassis (8) · wings (8) · design (8) · subsystem (8) · construction (8) · None (6) · aerodynamics (6) · steering (5) · propellers (5) · stability (4) · industry (3) · propulsion (3) · rudder (3) · wheels (3) · whole (3)
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None (7)
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IPCs:
IPC B64C39/00 (5) · IPC B64C13/00 (4) · IPC B64C17/00 (4) · IPC B64C3/00 (3) · IPC B64C25/00 (3) · IPC B64C33/00 (2) · IPC B64C23/00 (2) · IPC B64C31/06 (2) · IPC B64C1/00 (2) · IPC B64C3/38 (2) · IPC B64C13/02 (2)
CPCs:
CPC B64C2700/6295 (5) · CPC B64C39/00 (5) · CPC B64C13/00 (4) · CPC B64C17/00 (3) · CPC B64C3/00 (3) · CPC B64C2700/6233 (3) · CPC B64C25/06 (3) · CPC A63H27/08 (2) · CPC B64C33/00 (2) · CPC B64C3/38 (2) · CPC B64C2700/6256 (2) · CPC B64C23/005 (2) · CPC B64C2700/6259 (2) · CPC B64C13/02 (2)
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