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Patents > Tech fields : Airplane or propeller & Citations from after 1930: 3-30

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None (15) · USPC 244/17.21 (2) · USPC 244/35R (2)
CPCs:
CPC B64C11/48 (3) · CPC B63H1/12 (3) · CPC B64C23/005 (2) · CPC B64C11/065 (2) · CPC Y10T29/49332 (2) · CPC B64C3/14 (2)
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Showing below up to 36 results in range #1 to #36.

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