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Expired Canadian patentCanada

Slider for a slide fastener

CA 1312451 C · Owner: Takabatake, Hideo · Inventors: Takabatake, Hideo

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 slider for use with a ladder-type slide fastener is disclosed which comprises a pair of opposed flanges and means of locking the slider in place against unintentional movement under the influence of a force tending to spread open the fastener. The locking means comprises a locking lug extending from either one of the flanges and adjacent first and second locking projections extending from either one of the flanges opposite to the locking lug the first, and second locking projections being spaced one element pitch apart such that the locking action is effected at either of the two projections in the event that the fastener coupling elements in one row are shifted out of the normal pitch …

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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 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 12, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 22, 1988
GrantedJanuary 12, 1993
Term endedJanuary 12, 2010
Patent numberCA 1312451 C
Classification (IPC)A44B19/30

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 22, 1988Patent grantedJan 12, 1993Term endedJan 12, 2010

Sources & verification

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