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Expired Canadian patentCanada

Building system and method

CA 1086090 A · Owner: Precast Structures Inc. · Inventors: Nanny, William C.; Dickens, Luther 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

BUILDING SYSTEM AND METHOD", ABSTRACT A system of constructing buildings by connecting together expanded plastic panels with reinforcing strips bonded thereto and wire mesh attached to the exterior surfaces thereof upon a foundation with at least a portion of the panels having a curved configuration to maximize structural strength of the combination of panels. Concrete is applied to the exterior of the combined panels with the wire mesh then forming reinforcing in the resultant concrete wall upon the panels and the interior is coated with plaster to form a low cost structure with very good insulating properties,

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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 September 23, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 23, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 23, 1977
GrantedSeptember 23, 1980
Term endedSeptember 23, 1997
Patent numberCA 1086090 A
Classification (IPC)E04B1/32 +2 more

Timeline

Timeline From CIPO dates

1978198019821984198619881990199219941996Application filedMarch 23, 1977Patent grantedSep 23, 1980Term endedSep 23, 1997

Sources & verification

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