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Apparatus for gaging engine-pistons

US 1,375,237 A · Inventors: SPENCER LOUIS R

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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.

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Why it's free to use

  • Granted April 19, 1921. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by April 19, 1938.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledOctober 14, 1919
GrantedApril 19, 1921
Term endedApril 19, 1938
Application number—
Classification (CPC)G01B5/00
Length4 pages

Timeline

Timeline From USPTO dates

1920192219241926192819301932193419361938Application filedOct 14, 1919Patent grantedApril 19, 1921Term endedApril 19, 1938

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Official USPTO records

Full published documentText and every drawing sheet as a PDF.USPTOFile historyStatus, office actions, notices, fee records and petitions.USPTO Patent CenterPatent Public Search recordSearchable full text and bibliographic data.USPTO

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