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US 2,103,151 A · Inventors: PERRY DIETRICH ROY

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Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted December 21, 1937. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by December 21, 1954.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledSeptember 28, 1936
GrantedDecember 21, 1937
Term endedDecember 21, 1954
Application number—
Classification (CPC)A63F7/044
Length5 pages

Timeline

Timeline From USPTO dates

193719391941194319451947194919511953Application filedSep 28, 1936Patent grantedDec 21, 1937Term endedDec 21, 1954

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