Mains protection device
CA 1280160 C · Owner: Allos, Janan E. · Inventors: Allos, Janan E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A mains protection device for a.c. mains comprises means for detecting whether or not the mains voltage is within an amplitude window. When the voltage goes above or below the window, the mains is disconnected from an appliance and when the voltage returns to within the window for a preset time, the mains is reconnected to the appliance.
Read the whole patent
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 February 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 12, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.