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Expired Canadian patentCanada

Fluid mixing device, in particular hot and cold water mixing device

CA 1302838 C · Owner: Graber, Heinz · Inventors: Graber, Heinz

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

Attorney's Docket No. 7944, INVENTOR: HEINZ GRABER INVENTION: FLUID MIXING DEVICE, IN PARTICULAR HOT AND COLD WATER MIXING DEVICE, ABSTRACT OF THE DISCLOSURE The hot and cold water mixing device contains a rotary slide which controls in opposite sense the inflow of cold and hot water. The rotary slide is provided with a device for suppressing the flow of hot and cold water through the rotary slide. In order to render the mixing valve smooth in operation and to simplify its construction without, eliminating the advantages of such construction of mixing device, the flow suppressing device is formed by a closure portion or element of a servo valve, and the rotary slide is structured to serve …

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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 June 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 29, 1988
GrantedJune 9, 1992
Term endedJune 9, 2009
Patent numberCA 1302838 C
Classification (IPC)F16K11/06 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedSep 29, 1988Patent grantedJune 9, 1992Term endedJune 9, 2009

Sources & verification

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