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Expired Canadian patentCanada

Adjustment device for liquefied gas lighters

CA 1050296 A · Owner: S.T. Dupont · Inventors: Faudemay, Edmond L. J.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An adjustment device for liquefied gas lighters is disclosed which allows precise automated setting of maximum and minimum permitted flame heights during the assembly of lighters which have a rotatable valve adjustment member extending from a valve well in the lighter. Fixed stop means are provided on the lighter. An adjustment mechanism rotates with the valve adjustment member and after adjustment of the flame height movable stop means are formed in the adjustment mechanism in positions chosen such that the movable stop means can abut the fixed stop means at positions of the adjustment mechanism corresponding to maximum and minimum flame height respectively. -2-

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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 13, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 13, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMarch 13, 1979
Term endedMarch 13, 1996
Patent numberCA 1050296 A
Classification (IPC)F23Q2/16 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMarch 13, 1979Term endedMarch 13, 1996

Sources & verification

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