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Expired Canadian patentCanada

Mechanism for supplying washing solutions to glass washer device

CA 1297645 C · Owner: Watanabe, Hideto · Inventors: Watanabe, Hideto

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 mechanism for supplying washing solutions to an automotive glass washer device having at least one wiper blade for wiping a glass member. The washing solution supplying mechanism includes a first tank a first pump, and a first pipe for supplying a first washing solution for cleaning away oridinary dirt to at least one nozzle disposed in confronting relation to the glass member. The mechanism also includes a second tank, a second pump and a, second pipe for supplying a second washing solution different from the first washing solution and containing a substance for cleaning away special dirt to the nozzle, a, first one-way valve disposed in the first pipe and coupled between the nozzle and …

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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 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 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.
FiledAugust 6, 1987
GrantedMarch 24, 1992
Term endedMarch 24, 2009
Patent numberCA 1297645 C
Classification (IPC)B60S1/46 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedAug 6, 1987Patent grantedMarch 24, 1992Term endedMarch 24, 2009

Sources & verification

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