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Patents > IPCs : IPC B64B1/00 or IPC B64D17/00 & Number of figures: 2

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Inventors:
None (3) · Spenser Aldborough Flower (2) · Everard Richard Calthrop (2) · Rodolfo Verduzio (2) · Friedrich von Ehrenberg (2) · August von Parseval (2) · Absalom Calhoun Ulmer (2) · Alcime Lefèvre (2)
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Applicant person:
None (4) · Friedrich von Ehrenberg (2) · Everard Richard Calthrop (2) · Rodolfo Verduzio (2) · Spenser Aldborough Flower (2) · August von Parseval (2) · Alcime Lefèvre (2) · Absalom Calhoun Ulmer (2)
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Tech fields:
LTA (45) · balloon (11) · navigation (11) · safety (10) · frame (8) · dirigible (8) · parachute (8) · propulsion (7) · stability (6) · balloons (5) · car (5) · airship (5) · hybrid (4) · lift (4) · airplane (4) · ballonet (4) · None (4) · propeller (4)
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None (25)
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Citations from after 1930:
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