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Patents > Year granted: 1894 & Family year: 1894

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None (11) · Nicholas H. Borgfeldt (3) · Joseph Hofmann (2) · Arey Van Winegarden (2)
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None (24) · propulsion (13) · LTA (8) · propeller (4) · navigation (4) · Dirigible (3) · Windmill (3) · airplane (2) · flapping (2) · track (2) · steam (2) · parachute (2) · airship (2) · ?? (2) · frame (2) · LTA? (2) · balloon (2)
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