Drilldown: Patents

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Patents > Year filed: 1900 - 1909 & Office : AU or CU or DE or None & Granted: Yes & National tech categories : DE 77h.2 or None

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None (5)
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None (14) · LTA (9) · design (8) · Whole (6) · propulsion (6) · propeller (6) · navigation (5) · frame (5) · propellers (4) · flapping (4) · wings (4) · construction (4) · stability (3) · suspension (3) · balloon (3) · lift (2) · airplane (2) · human-powered (2) · heavier-than-air (2) · car (2)
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Showing below up to 45 results in range #1 to #45.

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