Device and method for telephony interconnection intended to offer continuity of service to independent stations in a communications network
CA 2068941 C · Owner: Le Bastard, Jean · Inventors: Soupirot, Joel; Le Bastard, Jean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Device and method for telephony interconnection intended to offer continuity of service to independent stations in a communications network. In a communications network between fixed stations and fixed terminals, the said fixed stations being linked to the telephony channels while the fixed terminals comprise an antenna for mutual interaction over distance with independent stations, means of connection to the telephony channels of the network are provided and there is established a telephony relationship between an independent station (SA) and another station (SF) linked to the telephony channels of the network by the intermediary of a primary link between the independent station (SA) and …
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 May 19, 1992 and granted August 25, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 2014.
- 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.