Network signalling protocol for communications system
CA 1250969 A · Owner: Nortel Networks Limited · Inventors: Brown, Jeffrey J.; Gee, Gavin; Ellson, John C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, A network signalling protocol for transmitting signalling and control information from each station to one or more other stations over a common transmission line. At each station the protocol comprises transmitting in a commonly recognized sequence at least a header signal in a uniquely allocated time slot thence marking each time slot in which no signal was transmitted and thereafter transmitting at least the header signals sequentially so as to eliminate the marked time slots in which no signal was transmitted.
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
- Granted March 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 7, 2006.
- 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.