Test access system and method for digital communication networks
CA 2313074 A1 · Owner: Kramarczyk, Marian · Inventors: Kramarczyk, Marian; Foni, David; Tzotzkov, Dobrin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The system includes a number of line access devices each of which is coupled , to at least one of the communication lines both ends of which terminate at , telecommunications termination sites. One or more monitoring buses are defined by a number of relays, one or more of which is coupled to one of the line access devices. A test device interface which is selectively coupled to the , bus provides bi-directional connectivity between the selected communication line and a selected testing device coupled thereto. An activated one or more of the relays couples a selected one of the communication lines to a selected one of the testing devices via the test device interface. One or more signal …
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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
- Filed December 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2020.
- 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.