Multiple terminal message indicator for a telecommunications network
CA 2249129 C · Owner: Nortel Networks Limited · Inventors: Sundhar, Kalyan R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for providing indications of a phone subscriber's messages at multiple phones. After a caller records a message the system provides indications of the pending message at all of a subscriber's phones or at a group of the subscriber's phones. The apparatus may also provide different types of message indicators to indicate which phone originates the call resulting in the message.
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 October 1, 1998 and granted March 18, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 1, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 2020.
- 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.