Telecommunications network for serving users from two switches
CA 2174681 C · Owner: Ardon, Menachem Tsur · Inventors: Ardon, Menachem Tsur
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for serving selected lines and trunks from two or more switches. The selected line and trunks are connected to peripheral unitseach served by two or more switches. The switches each maintain translation information and the supervisory states of the selected lines and trunks. Advantageously at low cost, the selected lines and trunks can be provided with service even when one of the switches is out of service.
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 April 22, 1996 and granted February 15, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 22, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 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.