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Expired Canadian patentCanada

Modular brickwork form

CA 1295850 C · Owner: Goldman, Robert I. · Inventors: Goldman, Robert I.

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 brickwork form for producing a regular pattern in brickwork construction. Raised ledges have concave and convex dimples to interconnect with adjoining forms avoiding added space and deformation experienced by present day forms. The modular brickwork form has raised dividers and the ledges to form a continuous pattern. The lack of overlapping U-shaped edges also avoids added space between bricks and an irregular pattern of bricks. The raised ledges are also tapered to allow nesting of the forms when stacked. The forms may include ports for drainage and corrugation for added strength.

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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 February 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 18, 2009.
  • 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 28, 1989
GrantedFebruary 18, 1992
Term endedFebruary 18, 2009
Patent numberCA 1295850 C
Classification (IPC)E04F13/08 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedJune 28, 1989Patent grantedFeb 18, 1992Term endedFeb 18, 2009

Sources & verification

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