Drilldown: Patents

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Patents > Year granted: 1920 - 1929 & Tech fields : construction or lift or propeller & Number of claims: 1-2

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CPCs:
None (16) · CPC B64C3/00 (5) · CPC B64C3/18 (3) · CPC B64C2700/6235 (3) · CPC B64C2001/0063 (3) · CPC B64D7/02 (2) · CPC B64C1/06 (2) · CPC B64C1/064 (2) · CPC B64C1/065 (2) · CPC B64C2700/6233 (2) · CPC B64C35/00 (2) · CPC B64C11/22 (2)
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Showing below up to 53 results in range #1 to #53.

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