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Expired Canadian patentCanada

Kitchen sink unit with refuse disposal opening

CA 1296141 C · Owner: Kemmerling, Wolfgang · Inventors: Sperka, Adolf; Kemmerling, Wolfgang

CIPO record

Overview

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

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Abstract From the Canadian patent

To provide a single structured sink unit in which selectively, household refuse can be separated into garbage (which is biodegradable) and trash (which is not biodegradable), the sink unit is formed with two aligned openings , positioned front-to-back. The second opening may have, selectively, a refuse chute inserted therein or a basket ,for example for cleaning supplies or the like. The openings are alignable with either separate refuse containers or a single container which is compartmentalized, for selective placement of separated trash and garbage or for unseparated refuse.

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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 February 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 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.
FiledNovember 19, 1987
GrantedFebruary 25, 1992
Term endedFebruary 25, 2009
Patent numberCA 1296141 C
Classification (IPC)E03C1/18 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedNov 19, 1987Patent grantedFeb 25, 1992Term endedFeb 25, 2009

Sources & verification

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