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Expired Canadian patentCanada

Yarn package

CA 1106823 A · Owner: Teijin Limited · Inventors: Mikumo, Toshihumi; Nose, Kenkichi

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 yarn package wound on a bobbin by the largest traverse stroke at the final traverse motion wherein, during the winding operation thereof at least for one, time the traverse stroke is decreased to a second traverse stroke by a certain amount from a first traverse stroke which is just before the commencement of the decrease of the traverse stroke, and then, the traverse stroke is increased to a third traverse stroke larger than the first traverse stroke.

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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 August 11, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 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.
FiledApril 27, 1979
GrantedAugust 11, 1981
Term endedAugust 11, 1998
Patent numberCA 1106823 A
Classification (IPC)B65H55/04 +1 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedApril 27, 1979Patent grantedAug 11, 1981Term endedAug 11, 1998

Sources & verification

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