A telecommunications network
CA 2291938 A1 · Owner: Stahl, Uwe · Inventors: Stahl, Uwe; Krank, Lothar; Lautenschlager, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A telecommunications network, with an exchange (1) in which a storage device (3) stores services which the subscriber can have executed by the exchange, is characterised in that the exchange (1) is designed such that it enables the subscriber to transmit programs and/or commands or macros to the storage device (3) of the exchange (1) and that it allows at least the subscriber who has sent these programs/commands to the exchange (1) to activate and also deactivate these programs/commands. A subscriber can thus create and/or adapt programs for his own requirements.
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 8, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 8, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 8, 2021.
- 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.