Remote subscriber line unit provisioning system for use with voice communication facilities
CA 2284419 C · Owner: Akhteruzzaman, Akhtar · Inventors: Akhteruzzaman, Akhtar; Sand, Paul Raymond
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The remote subscriber line unit provisioning system which operates on a shared facilities basis with the voice communication facilities of the remote subscriber line unit. This architecture eliminates the need for dedicated communication facilities to interconnect the remote subscriber line unit with the, central facilities management system.
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 30, 1999 and granted August 13, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 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.