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Expired Canadian patentCanada

Jewelry clasp

CA 1298095 C · Owner: Do-All Jewelry M'F'G. Co. Inc. · Inventors: Geldwerth, Simon

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

Clasp for connecting one end of a piece of jewelry to the other and includes a tongue member and a box member. The tongue member has a base with opposite edges a front, end, and a transverse attachment portion at the rear end for attachment to one end of the piece of jewelry. The box member has a base with a front end and with opposite upstanding side walls, and a transverse attachment portion connecting the side walls at the front end for attachment to the other end of the piece of jewelry. The attachment portion of the box member forms a transverse opening wide enough to receive the front end of the base of the tongue member. Each member is constructed and arranged such that the opposite …

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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 March 31, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 31, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 27, 1986
GrantedMarch 31, 1992
Term endedMarch 31, 2009
Patent numberCA 1298095 C
Classification (IPC)A44B11/25 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedNov 27, 1986Patent grantedMarch 31, 1992Term endedMarch 31, 2009

Sources & verification

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