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Expired Canadian patentCanada

Buckle

CA 1316331 C · Owner: Ykk Corporation · Inventors: Kasai, Kazumi

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

BUCKLE, A buckle comprises a male member having a tongue-shaped presser having on its bottom side a pair of engaging legs each having on its inner side a stepped portion and a female member in the form of a case having in its top wall a central aperture, the female member having a pair of resilient arms, one mounted on each side thereof each, resilient arm extending from one end of the female member and terminating in a free end portion for resilient angular movement about its proximal end, each free end portion having on its inner side a hook-shaped engaging means adapted for engagement with the stepped portion of the corresponding engaging leg when the engaging legs are forced into the …

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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 April 20, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 20, 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.
FiledJune 14, 1989
GrantedApril 20, 1993
Term endedApril 20, 2010
Patent numberCA 1316331 C
Classification (IPC)A44B11/14

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJune 14, 1989Patent grantedApril 20, 1993Term endedApril 20, 2010

Sources & verification

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