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Expired Canadian patentCanada

Apparatus for positioning and supporting an inner mold panel of a form

CA 2019431 C · Owner: Lee, Yuan-Ho · Inventors: Lee, Yuan-Ho

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

An apparatus for supporting an inner mold panel of a steel form during the process of setting up the steelform mold panels to form a wall is disclosed. The supporting apparatus includes a plurality of supporting members provided on the floor on which the inner steelform mold panels are placed, and a plurality of jack devices each resting against one of the supporting members and pressing against the inner steel-form mold panel. The supporting member preferably has a rectangular body with a plurality of holding pins which may be embedded in the floor. The supporting member may also have a plurality of protursions formed thereon with screws passing through a screw bore that is formed in each …

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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 20, 1990 and granted November 15, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 20, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 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 20, 1990
GrantedNovember 15, 1994
Term endedJune 20, 2010
Patent numberCA 2019431 C
Classification (IPC)E04G11/00 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJune 20, 1990Patent grantedNov 15, 1994Term endedJune 20, 2010

Sources & verification

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