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Expired, full termArchiveSolo inventor

Automatic stop for talking-machines

US 1,330,751 A · Inventors: SWIEGLE CHARLES H

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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 February 10, 1920. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by February 10, 1937.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledJuly 1, 1919
GrantedFebruary 10, 1920
Term endedFebruary 10, 1937
Application number—
Classification (CPC)—
Length3 pages

Timeline

Timeline From USPTO dates

192019221924192619281930193219341936Application filedJuly 1, 1919Patent grantedFeb 10, 1920Term endedFeb 10, 1937

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