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Tabulating machine

US 1,884,072 A · Inventors: MERKLE JOSEPH 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 October 25, 1932. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by October 25, 1949.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledMarch 27, 1926
GrantedOctober 25, 1932
Term endedOctober 25, 1949
Application number—
Classification (CPC)—
Length20 pages

Timeline

Timeline From USPTO dates

19271930193319361939194219451948Application filedMarch 27, 1926Patent grantedOct 25, 1932Term endedOct 25, 1949

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

Everything on this page comes from the USPTO record linked above.