A method and an arrangement in a subscriber line interface circuit
CA 2324471 A1 · Owner: Barkaro, Stefan · Inventors: Barkaro, Stefan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a subscriber line interface circuit having an amplifier (16) for generating private metering signals to be transmitted through the subscriber line interface circuit to a subscriber station via a subscriber line (2 3), the , amplitude of the private metering signals is adapted to the length of the subscriber line (2, 3) in that the amplitude is adapted and latched in discrete steps to the DC line voltage once the subscriber station goes offhook and unlatched when the state of the subscriber line interface circuit changes to stand-by mode.
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 11, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 11, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 11, 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.