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Expired Canadian patentCanada

Heatable flexible hair curlers

CA 1301581 C · Owner: Goeller, Loretta D. · Inventors: Goeller, Loretta D.

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 elongated flexible hair curler having a central core molded within a pliable viscoelastic polymer heat-retaining body. The hair curler comprises a generally elongated structure having rounded ends and is capable of being bent into a plurality of positions including being bent through an angle of substantially 180° back upon itself in order to retain a hair tress wound thereon without the aid of hair clips. The heat-retaining body is capable of being heated by an external means to a predetermined temperature and able to retain the heat for a predetermined time in order to facilitate the setting of curls in hair.

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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 May 26, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 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 1, 1985
GrantedMay 26, 1992
Term endedMay 26, 2009
Patent numberCA 1301581 C
Classification (IPC)A45D2/18 +1 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedNov 1, 1985Patent grantedMay 26, 1992Term endedMay 26, 2009

Sources & verification

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