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Expired Canadian patentCanada

Food temperature responsive apparatus for oven control

CA 1081346 A · Owner: General Electric Company · Inventors: Hornung, Richard E.

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

Food temperature responsive apparatus for controlling an oven. The apparatus includes a temperature sensing thermistor which may be included in a probe adapted for insertion into food being cooked in an oven. The apparatus includes simplified and effective means in the form, of voltage dividers and comparators for performing the, functions of de-energizing the oven heating means and energizing an audible alarm when interior food temperature reaches a preset temperature, protecting against an opencircuited or a short-circuited condition in a sensing circuit which includes the thermistor, guarding against responding to transient electrical noise and latching, the oven heating means in a …

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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 July 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 8, 1997.
  • 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—
GrantedJuly 8, 1980
Term endedJuly 8, 1997
Patent numberCA 1081346 A
Classification (IPC)G05D23/24 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJuly 8, 1980Term endedJuly 8, 1997

Sources & verification

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