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Expired Canadian patentCanada

Denture cleaning device

CA 1269026 C · Owner: Pinsonneault, Otto · Inventors: Pinsonneault, Otto

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 denture cleaning apparatus comprises a housing with a water inlet and outlet. A turbine wheel is driven by water flowing through the housing. In the housing are slidably mounted a pair of opposed brush members that are driven in reciprocation by the turbine wheel so as to clean dentures located between them.

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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 May 15, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 2007.
  • 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 2, 1985
GrantedMay 15, 1990
Term endedMay 15, 2007
Patent numberCA 1269026 C
Classification (IPC)B08B1/00 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedOct 2, 1985Patent grantedMay 15, 1990Term endedMay 15, 2007

Sources & verification

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