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Expired Canadian patentCanada

Rotary machining tool and method of its manufacture

CA 1268027 C · Owner: Weyerhaeuser Company · Inventors: Wright, James L.

CIPO record

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

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Abstract From the Canadian patent

11 P1, 13054b, ROTARY MACHINING TOOL AND METHOD OF ITS MANUFACTURE ABSTRACT OF THE DISCLOSURE, The present invention is a rotary machining tool and a method of making it using an easily replaceable cutter element assembly. A circular saw is exemplary of a cutting tool which can be made using the present invention. The cutter element assembly comprises two portions. The first is an inverted, generally U-shaped clevis with spaced apart side portions that fit over the circumferential edge of a sawplate. The clevis has an upper portion which extends outwardly from the sawplate edge thereby defining a tooth retaining socket between the sawplate edge and the clevis. The side portions of the …

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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 April 24, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 24, 2007.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 24, 1987
GrantedApril 24, 1990
Term endedApril 24, 2007
Patent numberCA 1268027 C
Classification (IPC)B27B33/08 +2 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedFeb 24, 1987Patent grantedApril 24, 1990Term endedApril 24, 2007

Sources & verification

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