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Patents > Office: FR & Grant date: 1920 & Number of claims: 1

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Tech fields:
airplane (16) · Frame (8) · propellers (8) · design (8) · construction (8) · subsystem (7) · control (7) · wings (5) · propulsion (5) · hybrid (4) · motors (4) · LTA (4) · None (3) · helicopter (3) · aerodynamics (3) · descent (3) · HTA (3) · Chassis (3) · marine (3) · airship (3)
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IPCs:
IPC B64C13/00 (5) · IPC B64C11/00 (3) · IPC B64C17/00 (3) · IPC B64C13/12 (3) · None (2) · IPC G01S1/72 (2) · IPC F03D3/06 (2) · IPC B64B1/40 (2) · IPC B64C25/00 (2) · IPC B64C3/56 (2) · IPC B64C1/06 (2) · IPC B64B1/62 (2)
CPCs:
CPC B64C13/00 (5) · CPC B64C17/00 (4) · CPC B64C13/12 (3) · CPC B64C13/0421 (2) · CPC B64C2700/6256 (2) · CPC B64B1/40 (2) · CPC F03D3/067 (2) · CPC F05B2240/211 (2) · CPC B64C2001/0063 (2) · CPC F05B2260/72 (2) · CPC G01S1/72 (2) · CPC B64C25/64 (2) · CPC B64C3/56 (2) · CPC B64B1/62 (2) · CPC B64C11/00 (2)
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