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Expired Canadian patentCanada

Plastic well with plastic well adapter

CA 1266430 C · Owner: Paulus, Cecil Harold · Inventors: Paulus, Cecil Harold

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 plastic well includes a plastic well casing with a hole that is disposed therethrough transversely to a casing axis. A plastic adapter plug assembly is disposed inside the casing and is forced toward the transversely-disposed hole in the casing by a plastic locking cam that is a part of the adapter plug assembly. The adapter plug assembly is supported by a plastic support plate that engages the top of the casing and by a plastic support tube that is bonded to both the support plate and the adapter plug assembly. A plastic saddle is disposed outside the casing and is bonded over the hole in the casing.

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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 March 6, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 19, 1988
GrantedMarch 6, 1990
Term endedMarch 6, 2007
Patent numberCA 1266430 C
Classification (IPC)E21B33/00 +1 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedApril 19, 1988Patent grantedMarch 6, 1990Term endedMarch 6, 2007

Sources & verification

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