David Palmgren

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David Palmgren was an aero inventor at 511 1/2 Nun Street, Wilmington, North Carolina, US. He made many foreign filings of his airplane design with wings that folded out and back, but for some reason we haven't found any aeroplane patent he filed to the US patent office, though he filed a patent for a cigar-cutting tool there. This person had 0 publications and 6 patents in this database.

Patents whose inventor or applicant is David Palmgren

  • Patent CA-1910-147357 (English title: Machine for aerial navigation, Filing date: 1910-12-31)
  • Patent GB-1911-210 (English title: Machines for aerial navigation, Filing date: 1911-01-04)
  • Patent GB-1911-884 (English title: Device indicating the horizontal lean of an aerial machine during flight, Filing date: 1911-01-04)
  • Patent DE-1911-285227 (English title: Flying machine with rotatable airfoils to the wings by hinges, Filing date: 1911-01-19)
  • Patent AT-1911-60737 (English title: Flying machine, Filing date: 1911-01-21)
  • Patent FR-1911-425455 (English title: Perfected airplane, Filing date: 1911-02-01)

References


Names David Palmgren
Countries US
Locations Wilmington, North Carolina
Occupations engineer
Tech areas Airfoil
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