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Expired Canadian patentCanada

Multi-panelled concrete forming structure for forming flat or curved walls

CA 1188126 A · Owner: Symons Corporation · Inventors: Connors, Frank T.

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 modular concrete form structure including a series of at least three vertically extending rows of concrete form panels to be joined together in side-by-side relation as a gang for use in the formation of straight or curved concrete walls. The panels have confronting slotted panel margins about their perimeters. Fasteners secure the confronting panel margins in side-by side relation. A series of spaced vertically aligned an horizontally positioned mini-walers are provided for mounted disposition in lapped engagement against the confronting slotted panel margins. The mini-walers each have a width exceeding the width of the form panel and being of sufficient additional width to extend over …

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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 4, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 4, 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.
FiledJune 17, 1982
GrantedJune 4, 1985
Term endedJune 4, 2002
Patent numberCA 1188126 A
Classification (IPC)E04G11/06 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedJune 17, 1982Patent grantedJune 4, 1985Term endedJune 4, 2002

Sources & verification

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