Drilldown: Patents

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Patents > National tech categories: DE 77 & First filing: No & Number of text pages: 2-3

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LTA (16) · navigation (8) · propulsion (8) · frame (7) · car (6) · balloon (5) · propeller (4) · stability (4) · flapping (3) · None (3) · dirigible (2) · sail (2) · kite (2) · hydrogen (2) · airplane (2) · human-powered (2) · balloons (2) · wheels (2)
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Showing below up to 32 results in range #1 to #32.

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