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Expired Canadian patentCanada

Protective guard for combustion appliance

CA 1214369 A · Owner: Toyotomi Kogyo Co. Ltd. · Inventors: Niha, Osamu; Nakamura, Kazuharu; Matsumoto, Motoki

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

The protective guard of the invention comprises a front frame having a pair of vertical frame portions between which a protective guard body is provided; a pair of side frames which, at one end are rotatably supported on, the vertical frame portions of the front frame on both ends thereof; and a cross beam member on both ends thereof slidably engaging the side frames. When the cross beam member is positioned at the upper ends of the side frames the side frames are so rotatable about the axes of the upper ends of the vertical frame portions of the front frame that the side frames are able to be inwardly folded, and when the cross beam member is positioned at the lower ends of the side …

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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 November 25, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 25, 2003.
  • 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 23, 1984
GrantedNovember 25, 1986
Term endedNovember 25, 2003
Patent numberCA 1214369 A
Classification (IPC)F24C15/36

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedMarch 23, 1984Patent grantedNov 25, 1986Term endedNov 25, 2003

Sources & verification

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