Drilldown: Patents

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Patents > Inventor country: US & Tech fields : airplane or balloon or construction or parachute & Granted : No or Yes & National tech categories : USPC 244/22 or USPC 244/30 or USPC 244/90R & First filing : No or Yes

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Inventors:
Orville Wright (2) · Wilbur Wright (2) · Alexander Graham Bell (2) · Stewart Cairncross (2)
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None (6)
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Showing below up to 59 results in range #1 to #59.

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