Multiplexed interconnection of packet switching node packages
CA 1237802 A · Owner: American Telephone And Telegraph Company · Inventors: Larson, Mikiel L.; Toy, Wing N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract A packet switching network comprises switching nodes residing on circuit packs that are interconnected by packet signal transmission links carrying multiplexed pulse-width modulated signals each representing three bits. A link incoming to a pack connects to an input port of a demultiplexer, whose output ports are coupled to packet inputs of three nodes. The incoming signal stream is demultiplexed into three serial signal substreams. Each substream is transmitted to a node for switching. A link outgoing from a pack connects to an output port of a multiplexer whose input ports are coupled to the packet outputs of three nodes. The three incoming serial signal substreams are …
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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 June 7, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2005.
- 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.