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Expired design patentArchiveSolo inventor

Combined electronic calculator and clock

US D258,666 S · Inventors: Yoshioka; Eiichi et al.

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Overview

The published document from the USPTO: abstract, claims, description. Open it full size

Read the whole patent

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.

Google PatentsUSPTO PDF

Why it's free to use

  • Granted March 24, 1981. A US design patent lasts 14 years from grant (15 if filed from May 13, 2015), so this one ended March 24, 1995.
  • A design patent protects only how a product looks. We check US rights only.
FiledOctober 10, 1978
GrantedMarch 24, 1981
Term endedMarch 24, 1995
Application number05/949549
Classification (CPC)—
Length3 pages

Timeline

Timeline From USPTO dates

1982198419861988199019921994Design grantedMarch 24, 1981Term endedMarch 24, 1995

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.