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Patents > National tech categories : DE 77 or USPC 244/99.11 & Number of text pages: 2-3

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Office:
Inventors:
Ernst Georg August Baumgarten (4) · F. Gaebert (3) · None (2) · Carl Alfred Johansson (2) · Carl Georg Rodeck (2) · Rudolf Chillingworth (2) · Carl Friedrich Billwiller (2) · Federico Capone (2)
Inventor country:
Applicant person:
None (29) · Ernst Georg August Baumgarten (4) · Carl Friedrich Billwiller (2) · Carl Alfred Johansson (2) · F. Gaebert (2) · Federico Capone (2) · Carl Georg Rodeck (2)
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Applicant is inventor:
Tech fields:
LTA (48) · propulsion (25) · navigation (19) · frame (18) · balloon (14) · car (11) · airship (10) · propeller (10) · stability (9) · None (8) · Control (7) · airplane (6) · kite (6) · ornithopter (6) · flapping (5) · dirigible (5) · captive (5) · steering (5)
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Citations from after 1930:
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