Drilldown: Patents

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Patents > Office: US & Family year: 1870 - 1879 & Number of claims: 2-8

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None (6)
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Tech fields:
LTA (13) · propulsion (12) · propeller (9) · navigation (5) · None (4) · frame (4) · balloon (4) · flapping (4) · projectile (3) · military (3) · Human-powered (3) · marine (3) · airplane (3) · windmills (2) · marine propulsion (2) · rudder (2) · car (2) · landing (2) · Windmill (2)
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None (12) · USPC 244/28 (2) · USPC 244/73R (2) · USPC 416/139 (2) · USPC 244/3.23 (2)
CPCs:
CPC B64B1/00 (4) · CPC B64C27/54 (4) · CPC B64C11/346 (3) · CPC B64B1/40 (3) · CPC B64C11/36 (2) · CPC B64C39/005 (2) · CPC F03D11/00 (2) · CPC F16B2/02 (2) · CPC F16B2200/40 (2) · CPC B64C27/322 (2) · CPC Y10T403/4677 (2) · CPC B64C11/001 (2) · CPC B64C11/04 (2) · CPC Y02E10/722 (2) · CPC A63B71/0672 (2)
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Showing below up to 44 results in range #1 to #44.

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