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Expired Canadian patentCanada

Joint

CA 1071828 A · Owner: Wemyss, George A. · Inventors: Wemyss, George A.

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

A joint for connecting together three generally tubular members comprises first and second members and a clamp for joining the two joint members together. Each of the joint members has first and second portions, the first portion of each joint member being a telescopic fit within a respective one of the tubular members. The second portions of the two joint members together form a connector for joining to the third tubular member, and the clamp passes round the two second portions of the joint members.

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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 February 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 1997.
  • 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—
GrantedFebruary 19, 1980
Term endedFebruary 19, 1997
Patent numberCA 1071828 A
Classification (IPC)E04B1/58 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedFeb 19, 1980Term endedFeb 19, 1997

Sources & verification

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