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Expired Canadian patentCanada

Wall tie device

CA 1290957 C · Owner: Furr, Donald · Inventors: Furr, Paul J.; Furr, Donald

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 wall tie system for use during construction of a new structure to tie the new structure to an existing wall. The system comprises a backing plate (1) which in use, is fixed to the existing wall and a number of wire ties (20, 21, 22) having one pact (21) which is in use, engaged with the backing plate (1) and another part (20) which is interposed between successive courses of the new wall. The backing plate is provided along its length with a number of hook-like tabs (7) extending out of the front face of the backing plate behind which the wire ties are engaged. The tabs (7) are arranged in opposed pairs and the pairs in longitudinally spaced groups with three pairs to a group, The wire …

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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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 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.
FiledJuly 3, 1987
GrantedOctober 22, 1991
Term endedOctober 22, 2008
Patent numberCA 1290957 C
Classification (IPC)E04B1/41

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJuly 3, 1987Patent grantedOct 22, 1991Term endedOct 22, 2008

Sources & verification

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