Large capacity modular atm switch
CA 2191463 C · Owner: Nortel Networks Corporation · Inventors: Munter, Ernst August
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A large capacity ATM switch is con-, structed in a matrix of a plurality of modules which are connected by high speed buses. Each module includes and I/O port for external access to the switch. Data are exchanged between I/O ports in trains of continuous ATM cells of any arbitrary number. Prior to transmission of data, a connection between destination and source I/O ports is made by exchanging a connection request and connection grant signal through control buses.
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, 1995 and granted January 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2017.
- 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.