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Expired Canadian patentCanada

Cylindrical freezing drum for slice ice making machines and a method of producing the drum

CA 1285782 C · Owner: Buus, Peter · Inventors: Buus, Peter

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 cylindrical freezing drum for a slice ice making machine and of the type adapted to be supplied with a freezing medium to one side of the drum wall and with water to the opposite side thereof and to cooperate with scraper means for successively scraping off the ice as hereby produced on the drum, said drum being made of steel and provided with an exterior metallic coating characterized in that the metallic coating is an aluminum coating applied by the so-called electric arc spraying method.

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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 July 9, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 9, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 2, 1985
GrantedJuly 9, 1991
Term endedJuly 9, 2008
Patent numberCA 1285782 C
Classification (IPC)F25C1/14 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedDec 2, 1985Patent grantedJuly 9, 1991Term endedJuly 9, 2008

Sources & verification

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