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Expired Canadian patentCanada

Garbage disposal unit

CA 2018662 C · Owner: Sketch, Ralph M. · Inventors: Sketch, Ralph M.; Hamson, Karl

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 garbage disposal unit comprises an outer casing with an open front having a pair of opposed side walls a top wall, and a rear wall, and an inner container with an open top pivotally mounted about a transverse pivot axis extending between the side said walls of said outer casing. The container is retractable into the casing and the top of the, inner container has a shape complementary to the inner shape of the top wall of the outer casing so as to mate therewith. The location of said pivot axis is above the bottom of the casing and in front of the centre of gravity of the container such that the weight of the container and any, contents therein, urges complementary top of the bin and the …

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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

  • Filed June 11, 1990 and granted November 9, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 11, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 11, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 11, 1990
GrantedNovember 9, 1993
Term endedJune 11, 2010
Patent numberCA 2018662 C
Classification (IPC)B65G1/14 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJune 11, 1990Patent grantedNov 9, 1993Term endedJune 11, 2010

Sources & verification

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