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Expired Canadian patentCanada

Saw chain sharpening fixture

CA 1093309 A · Owner: Pro Sharp Corporation · Inventors: Aksamit, Frank J.

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

A saw chain sharpening fixture is disclosed featuring an inverted U-shaped frame adapted to be installed on a cutter bar of a chain saw and having a sharpening opening in a frame. A pair of sharpening tool adaptor guides are mounted on sidewalls of the frame and diverge outwardly from the sharpening opening the adaptor guides each having an elongated bearing surface the lowermost portion of which is adapted to be disposed below the top of the cutter bar for supporting a sharpening tool adaptor on a selected one of the guides.

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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 13, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 13, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 2, 1979
GrantedJanuary 13, 1981
Term endedJanuary 13, 1998
Patent numberCA 1093309 A
Classification (IPC)B23D63/16

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedJan 2, 1979Patent grantedJan 13, 1981Term endedJan 13, 1998

Sources & verification

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