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Expired Canadian patentCanada

Humidity control appliance

CA 1102127 A · Owner: Smith, Carl · Inventors: Smith, Carl

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 evaporator is placed in fluid series with a restrictor tube and a condensor across the inlet and outlet respectively of a motorized refrigerant compressor containing a refrigerant in such manner that the evaporator and condensor are subjected to fan control air currents. The selector switch for the mode of operation as in Dehumifier energize appropriate contacts in the controlling humidity sensitive switch adjustable to control the energizing of the compressor motor and the fan drive motor. The evaporator being located above an open drain tank having, rising therefrom an evaporator cloth supported in the pathway of the moving stream of air controlled by the fan. In the Humidifing mode …

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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 June 2, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 16, 1978
GrantedJune 2, 1981
Term endedJune 2, 1998
Patent numberCA 1102127 A
Classification (IPC)F24F3/14

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedFeb 16, 1978Patent grantedJune 2, 1981Term endedJune 2, 1998

Sources & verification

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