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Expired Canadian patentCanada

Slide fastener lock assembly

CA 2018439 C · Owner: Ykk Corporation · Inventors: Horita, Yoshiyuki; Terada, Yasuharu

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 slide fastener lock assembly comprises a slider pull tab having an engaging pin and a lock having a locking lug releasably engageable therewith. The lock has a latch movable toward and away from the locking lug to lock and unlock the pull tab. A lock tumbler is rotatable by a key to releasably lock the latch with the engaging pin. The pull tab and the lock can be joined together simply by flipping the pull tab down with its aperture fitted over the locking lug.

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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 June 7, 1990 and granted May 31, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 7, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 7, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 7, 1990
GrantedMay 31, 1994
Term endedJune 7, 2010
Patent numberCA 2018439 C
Classification (IPC)A44B19/30

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedJune 7, 1990Patent grantedMay 31, 1994Term endedJune 7, 2010

Sources & verification

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