Drilldown: Patents

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Patents > Grant date: 1920 - 1929 & Number of text pages: 3-4 & Number of claims: 5

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None (7) · airplane (5) · construction (4) · design (4) · propellers (3) · motors (3) · frame (3) · sustentation (2) · propulsion (2) · internal combustion (2) · helicopter (2) · wings (2)
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None (4) · CPC B64C3/00 (3) · CPC B64C17/00 (2) · CPC B64C2700/6235 (2) · CPC B64C23/005 (2) · CPC B64C2700/6274 (2) · CPC B64C2700/6256 (2) · CPC B64C13/00 (2)
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Showing below up to 28 results in range #1 to #28.

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