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Expired Canadian patentCanada

Automatic night light circuit and structure

CA 1079244 A · Owner: Novo Products · Inventors: Smallegan, Jon

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 automatic night light which will change its illumination in response to changes in the ambient light level. The circuit comprises an AC input with the lamp and a solid-state switch connected in series a resistive voltage divider being connected across the solid-state switch and having series-connected fixed And light-sensitive resistors. The switch gate is connected to the voltage divider tap by a bidirectional conductor. The structure comprises a housing having circuit and lamp portions. The circuit portion has outlet prongs with bent-back ends, a circuit board being supported by notches in the housing ant the prong ends. The housing also supports spring contacts which connect the …

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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 10, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 10, 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—
GrantedJune 10, 1980
Term endedJune 10, 1997
Patent numberCA 1079244 A
Classification (IPC)F21V23/00 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJune 10, 1980Term endedJune 10, 1997

Sources & verification

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