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Expired Canadian patentCanada

Method of and apparatus for cutting off separable slide fastener chain

CA 1237883 A · Owner: Yoshida Kogyo K.K. · Inventors: Miyazaki, Kunio; Yoshieda, Keiichi

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An elongate separable slide fastener chain is cut off into individual separable slide fasteners the slide, fastener chain having a plurality of longitudinally spaced element-free portions with pin-receptive boxes supported respectively thereon. The slide fastener chain is fed under tension in one direction, and then stopped to release the slide fastener chain of its tension. The leading and trailing ends of one of the boxes are clamped to position the slide fastener chain. Then, the slide fastener chain is severed across one of the element-free portions adjacent to the leading end of the box. With this arrangement the, slide fastener chain can be positioned accurately for severance and cut …

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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 June 14, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 14, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 12, 1985
GrantedJune 14, 1988
Term endedJune 14, 2005
Patent numberCA 1237883 A
Classification (IPC)B26D5/28 +1 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedSep 12, 1985Patent grantedJune 14, 1988Term endedJune 14, 2005

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