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Expired Canadian patentCanada

Molding machine

CA 1188868 A · Owner: Prince Machine Corporation · Inventors: Prince, Edgar D.

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 molding machine for die casting injection, molding, and other similar processes comprises a base, shaped to support thereon a two-part die and a ram, for converging and diverging the die halves between open and closed positions. A pair of clamping frames are pivotally mounted on one end of the base and, include a closed border shaped to surround or receive therein side portions of the die halves. The clamping frames are laterally pivoted between a fanned-apart or open position wherein the die can be freely lifted off of the base, and a folded or closed position wherein the frame borders surround the die side portions and capture the same between the ends of the frames. In the closed …

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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 June 18, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 9, 1981
GrantedJune 18, 1985
Term endedJune 18, 2002
Patent numberCA 1188868 A
Classification (IPC)B22D17/26 +2 more

Timeline

Timeline From CIPO dates

1982198519881991199419972000Application filedSep 9, 1981Patent grantedJune 18, 1985Term endedJune 18, 2002

Sources & verification

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