Drilldown: Patents

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Patents > Family year: 1800 - 1899 & Number of claims: 1-2 & Number of diagram pages: 2

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Office:
Inventors:
William Cowell Sly (2) · Carl Friedrich Billwiller (2)
Inventor country:
Applicant person:
None (6) · Carl Friedrich Billwiller (2) · William Cowell Sly (2)
Applicant firm:
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Applicant is inventor:
Tech fields:
LTA (23) · propulsion (11) · frame (7) · navigation (6) · car (6) · propeller (6) · balloon (5) · control (4) · airship (4) · flapping (4) · parachute (4) · military (3) · marine (3) · projectile (3)
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Related to aircraft:
National tech categories:
None (9) · DE 77 (9) · USPC 244/3.23 (3) · USPC 244/30 (3) · USPC 244/32 (2) · USPC 416/119 (2) · USPC 416/108 (2)
First filing:
Cites these patents:
Citations from after 1930:
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