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Valve mechanism for reciprocating engines

US 1,336,711 A · Inventors: HYMAN ANTHONY ALFRED

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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 13, 1920. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by April 13, 1937.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledFebruary 4, 1919
GrantedApril 13, 1920
Term endedApril 13, 1937
Application number—
Classification (CPC)—
Length6 pages

Timeline

Timeline From USPTO dates

192019221924192619281930193219341936Application filedFeb 4, 1919Patent grantedApril 13, 1920Term endedApril 13, 1937

Sources & verification

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

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comJustia PatentsFull text, claims and classification.patents.justia.comFreePatentsOnlineFull text and PDF.freepatentsonline.comEspacenetForeign family and legal status.European Patent Office

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