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Expired Canadian patentCanada

Circular saw blade

CA 1301596 C · Owner: Felde, Jorg · Inventors: Felde, Jorg

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

Circular saw blades are provided on their outer periphery with saw tips (1) having hard-metal teeth (2) a centrally, located mounting hole (5) and a plurality of cutter slots (12', 12'') that are in each instance arranged in different areas of the diameter of the blade, and cutter bars (8) of hard metal high performance high-speed steel or tool steel that are, arranged on the trailing edges relative to the direction of, rotation of the blade of these slots. In order to create a circular-saw blade in a manner that saves material, that permits the production of very narrow kerfs, and yet is sufficiently stable or stiff the cutter bars, are configured with support bars (8) that extend at both …

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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 May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 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.
FiledNovember 16, 1987
GrantedMay 26, 1992
Term endedMay 26, 2009
Patent numberCA 1301596 C
Classification (IPC)B23D61/02 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedNov 16, 1987Patent grantedMay 26, 1992Term endedMay 26, 2009

Sources & verification

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