Drilldown: Patents

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Patents > Applicant firm: None & National tech categories: DE 77 & First filing: No

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Office:
Inventors:
Rudolf Chillingworth (2) · F. Gaebert (2) · Carl Alfred Johansson (2)
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Tech fields:
LTA (30) · balloon (14) · propulsion (13) · navigation (11) · car (11) · frame (9) · propeller (6) · stability (5) · dirigible (4) · None (4) · flapping (3)
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Showing below up to 48 results in range #1 to #48.

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