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Expired Canadian patentCanada

Device for a heat emitting unit for connection to an electric voltage source

CA 1264061 C · Owner: Fristedt, Tommy · Inventors: Fristedt, Tommy

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

In known heat-emitting units (1) for car seats the unit (1) is heated to a set temperature and once this has been reached the temperature in the unit (1) oscillates around that set. This is a drawback since after a certain, amount of oscillation the heat becomes too high and the setting must be altered. According to the invention the voltage supply is cut by means of a recording member (7), after a predetermined period of oscillation.

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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 December 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 27, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 25, 1986
GrantedDecember 27, 1989
Term endedDecember 27, 2006
Patent numberCA 1264061 C
Classification (IPC)A47C7/74 +2 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedSep 25, 1986Patent grantedDec 27, 1989Term endedDec 27, 2006

Sources & verification

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