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Expired Canadian patentCanada

Die vent for mold cavities

CA 1163416 A · Owner: Dbm Industries Limited · Inventors: Perrella, Guido

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 device as disclosed for operation with mold or die cavities of a die casting machine or injection molding machine for venting the cavity to allow gas therein to escape from the cavity when it is being filled with molt metal or the like. The body of the device includes a plurality of passageways providing communication between the die cavity and the atmosphere.

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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 13, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 2001.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 26, 1981
GrantedMarch 13, 1984
Term endedMarch 13, 2001
Patent numberCA 1163416 A
Classification (IPC)B22C9/00 +1 more

Timeline

Timeline From CIPO dates

1982198419861988199019921994199619982000Application filedJan 26, 1981Patent grantedMarch 13, 1984Term endedMarch 13, 2001

Sources & verification

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