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Expired Canadian patentCanada

Power venter

CA 1293658 C · Owner: Guzorek, Steven E. · Inventors: Guzorek, Steven E.

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 power venter for connection to an appliance vent system to provide draft and gas flow and which has components mounted exteriorly of a building wall and components extending through the wall, with the latter components including an inner pipe connectable to a vent pipe of a vent system and an outer pipe surrounding the inner pipe in spaced relation functioning as a heat shield and providing an annular space therebetween. The outside components include a vent hood with a blower housing mounted interiorly thereof and having a blower with an inlet communicating with an outside end of the inner pipe and having a blower outlet to atmosphere. An orifice plate is associated with the blower to …

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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 December 31, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 31, 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.
FiledFebruary 25, 1988
GrantedDecember 31, 1991
Term endedDecember 31, 2008
Patent numberCA 1293658 C
Classification (IPC)F24C1/14 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedFeb 25, 1988Patent grantedDec 31, 1991Term endedDec 31, 2008

Sources & verification

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