Device for monitoring the operation readiness of an electrical installation
CA 1292772 C · Owner: Klas, Karl Otto · Inventors: Klas, Karl Otto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The subject of the invention is a device for monitoring the operational readiness of an electrical installation in which a load is connected via a switching device to a DC AC or, three-phase supply, and also for monitoring the switching device. A first monitoring circuit (2) is connected in parallel with the switching unit (1) and contains a first display element (LED 1 LED 2), while a second monitoring circuit (3) containing a second display element (LED 3, LED 4), is connected on the one hand to the branch of the circuit joining the switching device (1) and the electrical load (4) and on the other hand with the voltage supply source.
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 December 3, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 3, 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.