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Expired Canadian patentCanada

Airflow system for a gas downdraft range

CA 1291384 C · Owner: Beach, Stanley H. · Inventors: Beach, Stanley H.

CIPO record

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

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Abstract From the Canadian patent

A gas downdraft range is provided with an airflow system for inducing and maintaining cooling airflow, combustion airflow and exhaust airflow. A housing defines an upwardly facing burner box and a cover overlies the housing with a downwardly formed burner pan disposed within the burner box. The bottom wall of the burner pan is spaced above the bottom wall of the burner box to form an air space therebetween. The burner box has cooling air inlets and coaling air outlets in communication with the air space to define a cooling airflow path. A burner is operably disposed in the burner pan and a grill grate overlies the burner pan providing combustion air inlet and outlet ports to and from the …

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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 October 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 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.
FiledOctober 28, 1987
GrantedOctober 29, 1991
Term endedOctober 29, 2008
Patent numberCA 1291384 C
Classification (IPC)F24C3/00 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedOct 28, 1987Patent grantedOct 29, 1991Term endedOct 29, 2008

Sources & verification

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