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Expired Canadian patentCanada

Saw blade

CA 1296601 C · Owner: Takegawa, Yoshikazu · Inventors: Tsujimoto, Susumu; Kawabata, Katsuhiko; Takegawa, Yoshikazu

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

The present invention relates to a saw blade comprising a right-set tooth which is bent to the right and a left-set tooth which is bent to the left relative to the running direction of the saw blade in combination, with an unset tooth which is not bent transversely. In addition, there is a difference in height in the direction of cut of the saw blade and in the direction of set width. A set tooth is provided immediately preceding an unset tooth so that a cutting action can be carried out alternately by a left-set tooth and by a right-set tooth suitably, repeated. Accordingly, the chips are more reduced in size which improves the case with which they are discharged. The positioning 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 March 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 3, 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.
FiledMarch 27, 1986
GrantedMarch 3, 1992
Term endedMarch 3, 2009
Patent numberCA 1296601 C
Classification (IPC)B23D61/00 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedMarch 27, 1986Patent grantedMarch 3, 1992Term endedMarch 3, 2009

Sources & verification

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