Network system having different attributes of terminal equipment devices
CA 2014369 C · Owner: Fujitsu Limited · Inventors: Miyamoto, Naoyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A network system includes a plurality of terminals classified into a plurality of groups a, network for selectively connecting the plurality of terminals to each other, and a control part for receiving a call indicating one of the groups from a source terminal which is one of the plurality of terminals and for coupling, through the network the, source terminal to a destination terminal which is one terminal included in the one of the groups and has an attribute identical to that of the source terminal.
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 April 11, 1990 and granted May 28, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 2012.
- 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.