Miswiring indicator in ground fault protection devices
CA 2191005 C · Owner: Cooper Wiring Devices, Inc. · Inventors: Torezan, Edward M.; Leopold, Howard S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A ground fault protection electrical outlet with miswiring indication includes, besides a main outlet unit that includes a housing a primary and a, secondary pair of first and second electrical connectors accessibly arranged on the housing, two main switches respectively interposed between the first and the, second, connectors of the primary and secondary pairs and simultaneously switchable between their open and closed positions and at least two electrical, contacts located at the same side of the switches as the secondary connectors an, indicator circuit built into the main outlet unit and operative for indicating a miswiring situation in which the wires of a wire pair that supplies …
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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
- Filed November 22, 1996 and granted January 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2018.
- 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.