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Patents > Office: US & Citations from after 1930: 4-20 & Number of figures: 5-6

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None (10) · military (6) · kite (6) · propeller (4) · frame (3) · Windmill (3) · safety (3) · projectile (3) · stability (2) · fuselage (2) · fun (2) · marine propulsion (2) · construction (2) · airplane (2)
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None (23) · USPC 244/153R (5) · USPC 244/3.23 (3)
CPCs:
CPC Y02E10/74 (5) · CPC A63H27/08 (4) · CPC F03D3/00 (4) · CPC B64C11/48 (3) · CPC B64C27/04 (2) · CPC B64C25/60 (2) · CPC F05B2260/72 (2) · CPC F05B2260/96 (2) · CPC B63H5/10 (2) · CPC B64C1/1476 (2) · CPC B64C27/463 (2) · CPC B64C11/006 (2) · CPC F42B10/30 (2) · CPC B64C11/205 (2)
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