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Patents > Supplementary to patent: None & Related to aircraft: .5 & Number of figures: 5-13

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Tech fields:
marine (6) · Windmill (3) · marine propulsion (3) · marine propeller (3) · impeller (2) · projectile (2) · paddle-wheel (2)
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None (14) · USPC 416/98 (2)
CPCs:
CPC B64C27/54 (7) · CPC B64C11/006 (4) · CPC Y02E10/74 (3) · CPC F03D3/00 (3) · None (2) · CPC B64C11/48 (2) · CPC B64C29/0033 (2) · CPC B63H1/04 (2)
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