Switching device comprising an auxiliary monostable switch coupled to a main switch
CA 2069617 C · Owner: Lange, Christian · Inventors: Abot, Jean; Lange, Christian; Ledroit, Michel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In such device, the auxiliary switch (13 14, 15) and the main switch (7, 8, 9) are closed one after the other by a simultaneous motion of their respective contact supports and are open in a reverse order by means of a releasable coupling (20) which is disengaged upon closing and which is engaged upon opening.
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 September 26, 1991 and granted September 5, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 26, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 26, 2013.
- 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.