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Expired Canadian patentCanada

Pipe coupling component

CA 1055067 A · Owner: Amp Incorporated · Inventors: Keith, Alan F.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An insert for use in a pipe coupling of the type comprising an insert for insertion into the end of a pipe a member having a tubular portion for reception of an end portion of the pipe containing the insert and a sleeve, for engagement about the tubular portion thereby to trap the pipe between the tubular portion and the insert and, thereby connect the member to the pipe the insert comp-, rising a cylindrical cross-section tubular member the outer surface of which comprises a first portion extending from one end of the insert and having a uniform diameter; a second, intermediate portion extending from the first portion and having a plurality of relatively wide arcuate, cross-section annular …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted May 22, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMay 22, 1979
Term endedMay 22, 1996
Patent numberCA 1055067 A
Classification (IPC)F16L33/00 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMay 22, 1979Term endedMay 22, 1996

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.