Drilldown: Patents

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Patents > Grant date: 1890 - 1899 & Patent agent: None & National tech categories: DE 77 & First filing: No

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LTA (21) · balloon (11) · car (9) · navigation (8) · frame (7) · propulsion (5) · propeller (4) · None (4) · stability (3) · dirigible (3) · captive (2) · mooring (2) · flapping (2) · rudder (2) · balloons (2)
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Showing below up to 32 results in range #1 to #32.

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