Fault tolerant local area network
CA 1305231 C · Owner: Plaintree Systems Inc. · Inventors: Boulton, Peter I.P.; Lee, Ernest Stewart
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
APPLICANT: University of Toronto, Innovations Foundation INVENTORS: P.I.P. Boulton, E.S. Lee, TITLE: ROBUST ROOTED TREE NETWORK A B S T R A C T, A data transmission network has a plurality of modems to transmit and receive data and a nexus including at least two controllers to control the transmission of data betwen the modems. Each controller has input ports and output ports with each of the modems being connected to an input port and an output port means on each of the controllers to permit the passage of data between the modems and the controllers. Each of the controllers has one of its outputs connected to an input port of the other of the controllers so that data transmitted by one of …
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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 July 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 14, 2009.
- 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.