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Expired Canadian patentCanada

Plastic molding apparatus

CA 1284710 C · Owner: Heil, Robert Francis · Inventors: Perry, David Sheperd; Heil, Robert Francis

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

Plastic molding apparatus including a, horizontal molding press with two platens and a mold having an ejector mold half and a cover mold half that form a mold cavity, each mold half being secured to a platen with at least one platen movable horizontally relative to the other platen to open and closed positions. The molding press has longitudinal rails along the top thereof parallel to the direction of relative movement of the platens. There is an elongated horizonatl gantry structure supported solely by the press and movably secured to the rails with the longitudinal axis of the gantry structure being oriented normal to the rails and the gantry is movable along the rails. There are two …

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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 11, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 11, 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.
FiledFebruary 20, 1987
GrantedJune 11, 1991
Term endedJune 11, 2008
Patent numberCA 1284710 C
Classification (IPC)B30B1/32 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedFeb 20, 1987Patent grantedJune 11, 1991Term endedJune 11, 2008

Sources & verification

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