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Perforated card-bookkeeping machine

US 1,933,353 A · Inventors: GUSTAV TAUSCHEK

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Overview

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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 31, 1933. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by October 31, 1950.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledJune 22, 1928
GrantedOctober 31, 1933
Term endedOctober 31, 1950
Application number—
Classification (CPC)—
Length5 pages

Timeline

Timeline From USPTO dates

19291932193519381941194419471950Application filedJune 22, 1928Patent grantedOct 31, 1933Term endedOct 31, 1950

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.