Communications terminal equipment
CA 2124571 A1 · Owner: Mcmaster, Samuel · Inventors: Kirwan, Stephen Anthony; Mcmaster, Samuel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Communications terminal equipment comprises: an analog voice module (4) for connection to an analog private exchange (9); a high speed data communication module (6) for connection to high speed communications devices (12); and an interface (3) for common channel signalling connection to a digital network (8). The equipment may further comprise a module (5) for common channel signalling connectivity to a digital private exchange. Use of the equipment allows interconnection of a wide variety of devices to a digital network.
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 December 9, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 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.