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Expired Canadian patentCanada

A hair clip

CA 2504936 C · Owner: Linshell Holdings Limited · Inventors: Walker, Lindsey Julia-Jane; Salisbury, Shelley-Anne

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 hair clip comprises a body (1), jaws (2 3) mounted on the body and a jaw , opening arrangement to allow the jaws to be opened single handed. The jaws have tines (2c, 3c) and are mounted at spaced positions on the body so as to be pivotable at the positions to resiliently grip hair in the tines. The spacing of the pivot positions on the body enables a body to be used which can be decorated or hollow to enhance the aesthetics of the hair clip.

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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 November 11, 2003 and granted April 17, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 11, 2023.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 11, 2025.
  • 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 11, 2003
GrantedApril 17, 2012
Term endedNovember 11, 2023
Patent numberCA 2504936 C
Classification (IPC)A45D8/20 +1 more

Timeline

Timeline From CIPO dates

2004200620082010201220142016201820202022Application filedNov 11, 2003Patent grantedApril 17, 2012Term endedNov 11, 2023

Sources & verification

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