Drilldown: Patents

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Patents > Family year: 1800 - 1899 & Number of text pages: 2-3 & Number of claims: 3-4 & Number of diagram pages: 2

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LTA (9) · None (6) · navigation (6) · Propulsion (4) · propeller (4) · frame (4) · stability (3) · propellers (3) · dirigible (3) · flapping (2) · paddle-wheel (2) · marine propulsion (2) · marine (2) · helicopter (2) · kite (2) · windmill (2) · design (2) · cargo (2) · balloon (2)
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None (5) · CPC B64C27/54 (4) · CPC B64B1/00 (3) · CPC Y02E10/72 (3) · CPC B64C11/48 (3) · CPC B64C33/02 (2) · CPC B64C11/006 (2)
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Showing below up to 33 results in range #1 to #33.

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