Telemetry access arrangement
CA 2095668 C · Owner: Bellsouth Corporation · Inventors: Schull, Jerome W.; Garland, Stuart Mandel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method and apparatus of accessing a customer premises device from a data accessing device via a telecommunications switching system. The telecommunications switching system is comprised of a voice band signal switching network for switchably interconnecting multiplicities of inlets and multiplicities of outlets. The inlets are for connection to interoffice telecommunications trunks. The outlets are for connection to analog customer lines. The method is comprised ofdetermining that a class of service for an inlet connected to the data accessing device is a class of service requiring establishment of a suppressed ringing connection; establishing a suppressed …
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 30, 1991 and granted April 29, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 30, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 30, 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.