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Patents > Office: US & Filing date: 1880 - 1889 & Number of diagram pages: 2-3

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LTA (19) · Propulsion (13) · navigation (11) · propeller (7) · balloon (6) · rudder (5) · frame (4) · stability (4) · flapping (3) · glider (3) · military (3) · marine (3)
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None (8) · USPC 244/96 (3) · USPC 244/30 (3) · USPC 244/127 (2) · USPC 114/21.1 (2) · USPC 244/3.23 (2) · USPC 244/28 (2) · USPC 244/27 (2) · USPC 244/64 (2)
CPCs:
CPC B64B1/00 (7) · CPC B64B1/40 (3) · CPC B64C27/54 (3) · CPC B64C31/04 (2) · CPC Y02E10/74 (2) · CPC Y02E10/72 (2) · CPC B64C11/006 (2) · CPC E05G1/024 (2)
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