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Tone-arm apparatus for talking-machines

US 1,349,636 A · Inventors: SWING ALFRED J

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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 August 17, 1920. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by August 17, 1937.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledNovember 15, 1915
GrantedAugust 17, 1920
Term endedAugust 17, 1937
Application number—
Classification (CPC)—
Length3 pages

Timeline

Timeline From USPTO dates

19161919192219251928193119341937Application filedNov 15, 1915Patent grantedAug 17, 1920Term endedAug 17, 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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