Patent Yard Sign in
Expired, full termArchiveSolo inventor

Mirror device for looms for ascertaining from the position of the weaver breaking of warp threads or the like in the loom

US 2,171,493 A · Inventors: ERNST HOCHHEIMER

USPTO PDF

Overview

The published document from the USPTO: abstract, claims, description and drawings. 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 August 29, 1939. A patent granted before 1976 lasted at most 17 years from grant, so its term ended by August 29, 1956.
  • We check US rights only. Old patents can still inspire new ones: improvements may be patentable.
FiledSeptember 1, 1937
GrantedAugust 29, 1939
Term endedAugust 29, 1956
Application number—
Classification (CPC)D03J1/00 +1 more
Length3 pages

Timeline

Timeline From USPTO dates

1938194019421944194619481950195219541956Application filedSep 1, 1937Patent grantedAug 29, 1939Term endedAug 29, 1956

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.