Wiring device circuit identification
CA 2182317 C · Owner: Pass & Seymour, Inc. · Inventors: Bryndzia, Michael R.; Osterbrock, James A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wiring device such as a switch or receptacle includes a sheet suitable for receiving markings from a pencil or ball-point pen affixed to a predetermined surface area of the device. A conventional wall plate is secured to the device by a screw passing through coaxial openings in the wall plate, the sheet and the surface area of the device and secured in a threaded opening. In the disclosed embodiment the, device is a duplex receptacle with the surface area and sheet lying between the two plug-receiving portions. Indicia placed on the sheet by the installer indicates the specific circuit i.e. the breaker and, panel, in which the device is connected.
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
- Filed July 30, 1996 and granted June 29, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 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.