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Expired Canadian patentCanada

Net having different size openings and method of making

CA 2104516 C · Owner: Mcmurray, Brian L. · Inventors: Mcmurray, Brian L.

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 warp knit net fabric is disclosed in which the number of stitches in each leg and in each join of a diamond pattern is varied to vary the size of the openings defined by the legs. An array of yarn ends are knit on a Raschel warp knitting machine and the formation of stitches of the legs is driven from one pattern chain drum and the formation of stitches of the joins is driven from another pattern chain drum. Switching from drum to drum is accomplished by means of a programmable controller.

Read the whole patent

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 August 20, 1993 and granted May 1, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 20, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 20, 1993
GrantedMay 1, 2001
Term endedAugust 20, 2013
Patent numberCA 2104516 C
Classification (IPC)D04G1/00 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedAug 20, 1993Patent grantedMay 1, 2001Term endedAug 20, 2013

Sources & verification

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