Drilldown: Patents

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Patents > Applicant type: None & Assigned to: None & Family year: 1800 - 1899 & Number of text pages: 2-3

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Inventors:
Otto Lilienthal (4) · Otto Hartung (2) · Georg Wellner (2) · Claison S. Wardwell (2)
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Tech fields:
LTA (23) · propulsion (18) · frame (17) · navigation (14) · propeller (10) · car (9) · balloon (9) · flapping (9) · stability (7) · military (6) · None (6) · rudder (4) · projectile (4) · parachute (4) · dirigible (3) · airfoil (3) · glider (3) · hydrogen (3) · wheels (3)
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National tech categories:
DE 77 (19) · None (8) · USPC 244/16 (3) · USPC 244/153R (2) · USPC 89/1.14 (2) · FR 5 (2) · USPC 244/74 (2) · USPC 244/3.23 (2) · USPC 244/28 (2)
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