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Patents > Office : CL or DE & Publication date: 1920

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Office: (Click arrow to add another value)
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Tech fields:
airplane (27) · frame (20) · construction (17) · design (15) · biplane (9) · wings (8) · fuselage (6) · subsystem (6) · propeller (6) · navigation (5) · stability (5) · metal (4) · lift (4) · hydroaeroplane (3)
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CPCs:
CPC B64C3/00 (15) · CPC B64C2700/6235 (10) · None (5) · CPC B64C35/00 (4) · CPC B64C17/00 (4) · CPC B64C13/00 (2) · CPC B64F2700/6261 (2) · CPC B64C2001/0063 (2) · CPC B64C3/18 (2) · CPC B64C1/061 (2)
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Showing below up to 53 results in range #1 to #53.

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