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Expired, full termArchiveSolo inventor

Rotatable yarn guides adapted for use on double twist spindles

US 3,133,403 A · Inventors: WALTER LENK

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Overview

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

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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.

Google PatentsUSPTO PDF

Why it's free to use

  • Granted May 19, 1964. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by May 19, 1981.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledFebruary 8, 1963
GrantedMay 19, 1964
Term endedMay 19, 1981
Application number—
Classification (CPC)D01H13/106 +2 more
Length5 pages

Timeline

Timeline From USPTO dates

196419661968197019721974197619781980Application filedFeb 8, 1963Patent grantedMay 19, 1964Term endedMay 19, 1981

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.