Drilldown: Patents

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Patents > Year granted: 1880 - 1889 & Office : BE or CA or Other & Number of diagram pages: 3-50000000

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Tech fields:
LTA (27) · navigation (17) · propulsion (11) · frame (10) · propeller (10) · rudder (8) · balloon (8) · flapping (7) · car (6) · marine (6) · cargo (4) · stability (3) · sail (3) · compartments (3) · control (3) · passenger (3) · ornithopter (3) · airfoil (3) · military (3)
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None (8) · DE 77 (6) · USPC 244/28 (5) · USPC 244/30 (4) · USPC 244/96 (4) · USPC 244/64 (3) · USPC 114/21.1 (2) · USPC 244/26 (2) · CA 244/24 (2)
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