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Expired Canadian patentCanada

Guide for band saws

CA 2297535 C · Owner: Snodgrass, Howard L. Jr. · Inventors: Snodgrass, Howard L. Jr.

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 band saw blade guide for use with band saw blades the band saw blade guide including a base a wheel having a high-speed bearing and a circumferential groove and a shaft movable with respect to the base. The groove receives a non-cutting edge of a band saw blade. The band saw blade guide is biased to be in constant contact with the non-cutting edge of the band saw blade.

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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

  • Filed February 1, 2000 and granted September 2, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 1, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 1, 2022.
  • 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 1, 2000
GrantedSeptember 2, 2003
Term endedFebruary 1, 2020
Patent numberCA 2297535 C
Classification (IPC)B23D55/08

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedFeb 1, 2000Patent grantedSep 2, 2003Term endedFeb 1, 2020

Sources & verification

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