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Expired Canadian patentCanada

Cam release sewer adapter

CA 1287652 C · Owner: Todd Brothers, Inc. · Inventors: Todd, Harry V.

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

Abstract of the Disclosure, An adapter for coupling a flexible corrugated drainpipe to a sewage disposal site inlet includes a, hollow tubular member having an opened drainpipe end portion adapted to engage threadably an end of a corrugated drainpipe. A hollow adapter member has an opened rear end portion adapted to be inserted into the disposal site inlet, and an opened upstanding front end portion, receives telescopically in a tight fitting relationship an opened rear end portion of the tubular member to interconnect the two members in fluid communication. A quick release mechanism on the tubular and adapter members enables a user to disassemble the two members by rotating the 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 August 13, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 13, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 18, 1987
GrantedAugust 13, 1991
Term endedAugust 13, 2008
Patent numberCA 1287652 C
Classification (IPC)F16L25/00

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMarch 18, 1987Patent grantedAug 13, 1991Term endedAug 13, 2008

Sources & verification

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