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Patents > IPCs: None & Citations from after 1930: 4-20 & Number of claims: 5-8

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propeller (6) · None (4) · airplane (4) · kite (3) · frame (3) · windmill (3) · aerial propeller (2) · safety (2) · military (2) · stability (2) · balance (2)
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CPC Y02E10/74 (4) · CPC F03D3/00 (3) · CPC A63H27/08 (2) · CPC F05B2260/96 (2) · CPC B64C27/463 (2) · CPC Y02E10/72 (2) · CPC F05B2260/74 (2)
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Showing below up to 32 results in range #1 to #32.

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