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Expired Canadian patentCanada

Insulating cap for electrical resistance heating element

CA 1203278 A · Owner: Adams, Roger K. · Inventors: Enright, George R.; Adams, Roger K.; Enright, John A.

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

Insulating Cap for Electrical Resistance Heating Element An electrical resistance heating element has a looped configuration, each looped end being enclosed in an electrically insulating cap which is split longitudinally into two ceramic segments which fit together to define an internal cavity having a Ushaped channel which receives the looped end of the electrical heating element.

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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 April 15, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 15, 2003.
  • 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 5, 1983
GrantedApril 15, 1986
Term endedApril 15, 2003
Patent numberCA 1203278 A
Classification (IPC)H05B3/20

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedMay 5, 1983Patent grantedApril 15, 1986Term endedApril 15, 2003

Sources & verification

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