Network node event notification in circuit switched environments
CA 2078081 A1 · Owner: Sestak, Mark R. · Inventors: Sestak, Mark R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of reporting an event to a monitoring station in a network of communication switching exchanges comprised of monitoring in each exchange for events to be reported, upon detection of the event, the exchange in which the event occurred automatically dialing a gateway network node to which a network monitoring station is connected upon the, network node responding to the automatic dialing sending at least one DTMF signal containing a report of the nature of the event and an identification of the exchange in which the event occurred to the network node for provision to the network monitoring station.
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 11, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 11, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 11, 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.