Virtual key system
CA 2391069 A1 · Owner: Mcmullin, Rick · Inventors: Mcmullin, Rick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A virtual key system is provided for giving small businesses access to network-based call features on a converged voice and data network. Call management and call feature functionality are provided on a Telephony Application Server (TAS) located on the premises of a service provider. The TAS performs call management functions such as translating dialled digits into IP addresses and call, feature functions such as call forwarding. Calls are routed through an IP/PSTN gateway and a traditional class 5 switch after consulting the TAS. The virtual key system allows the customer to have access to PBX-like features without having to purchase or maintain a PBX. The system also allows the service …
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 June 21, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2024.
- 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.