Data transport system
CA 2323772 A1 · Owner: British Telecommunications Public Limited Company · Inventors: Gibbings, Christopher John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for an asymmetric data connection comprising a head end router (2) couplable to an ATM PVC, a PSTN modem coupled to the head end router a , plurality of downstream routers each couplable to the ATM PVC via respective ATM interfaces, a plurality of downstream PSTN modems each coupled to a respective downstream router via a respective serial interface each ATM , interface of each respective downstream router being allocated in use, a , respective IP address in a single subnet and each serial interface of each , respective downstream router being allocated in use a respective IP address , in a single subnet. A method of establishing an asymmetric data connection is also described.
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 March 15, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 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.