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Expired Canadian patentCanada

Article with tethered prong fastener

CA 2238538 C · Owner: Benoit, Thomas A. · Inventors: Shereyk, David A.; Benoit, Thomas A.

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

An article with a tethered prong fastener having a first stem protruding therefrom, wherein the first stem has a distal end portion with a first resilient arm extending divergently outwardly therefrom and back toward the article and a first, flexible tether coupling the first resilient arm to the first stem. The first resilient arm flexible inwardly toward the first stem and subsequently flexible back outwardly away from the first stem, whereby the first flexible tether member limits outwardly deflection of the first resilient arm away from the first stem thereby improving fasteningperformance thereof without interfering with the inwardly flexing of the resilient arm. The tethered prong …

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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 May 25, 1998 and granted July 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 25, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 25, 1998
GrantedJuly 30, 2002
Term endedMay 25, 2018
Patent numberCA 2238538 C
Classification (IPC)F16B2/22 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedMay 25, 1998Patent grantedJuly 30, 2002Term endedMay 25, 2018

Sources & verification

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