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Patents > Tech fields : balloon or lift or propeller & Family year: 1907

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None (8) · Robert Esnault-Pelterie (8) · Louis Gathmann (2) · Oliver K. Chance (2) · Paul Frederik Degn (2) · Harry Martin Middleton (2)
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None (20)
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National tech categories:
FR 6.4 (13) · None (9) · AT 77d (4) · DE 77h.6 (4) · DE 77h.4 (3) · BE K (2) · USPC 244/22 (2)
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Showing below up to 62 results in range #1 to #62.

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