Drilldown: Patents

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Patents > Tech fields: stability & Filing date: 1800 - 1899

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Inventors:
Perham Wilhelm Nahl (3) · William Beeson (3) · Folacci (2) · George W. Turner (2) · Leonardo Torres Quevedo (2) · Frederick William Zimer (2)
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None (30) · Perham Wilhelm Nahl (3) · Folacci (2) · George W. Turner (2) · Frederick William Zimer (2)
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National tech categories:
None (14) · FR 6.3 (7) · DE 77 (5) · GB 4 aëroplanes (4) · GB 4 propel & steer (4) · USPC 244/3.27 (4) · USPC 244/3.3 (3) · USPC 244/16 (3) · USPC 244/153R (3) · GB 4 with buoyant (3)
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