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Expired Canadian patentCanada

Wood and metal building component adapted for prefabricated manufacture

CA 1069272 A · Owner: Haas, Fred · Inventors: Haas, Fred

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The following specification discloses a prefabricated building component for use as a rafter, stud or joist and comprises the following elements; a first wooden member of rectangular cross section has a pair of planar side faces aligned in planar relationship with a pair of planar side faces of a second wooden chord member of rectangular cross section. A first sheet steel web plate is spaced between said chord members and partially overlies one of the side faces of the first wooden member and partially overlies the adjacent side face of the second wooden member. A second sheet steel web plate partially overlies the adjacent side faces of the other side of the aligned chord members. Gang …

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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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 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.
Filed—
GrantedJanuary 8, 1980
Term endedJanuary 8, 1997
Patent numberCA 1069272 A
Classification (IPC)E04C3/16 +1 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 8, 1980Term endedJan 8, 1997

Sources & verification

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