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Expired Canadian patentCanada

Unified access platform distributing atm cells and telephony signals to subscriber premises over twisted wire pairs

CA 2289480 C · Owner: Next Level Communications L.P. · Inventors: Eames, Thomas R.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A Unified Access Platform capable of providing telephone and high speed data services in a number of different local loop configurations. In a first, embodiment a broadband digital, terminal (BDT) receives high speed data and telephony signals and, combines them into a cell based signal which is transported to an access multiplexor. At the access multiplexor a first linecard, generates an analog telephone signal and a second linecard, generate; a high-speed data signal. Analog telephone service is provided over a first twisted wire pair drop cable while the high, speed data service is provided over a second twisted wire pair drop cable. In an alternate embodiment the BDT's cell based, …

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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 April 13, 1998 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 13, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 13, 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.
FiledApril 13, 1998
GrantedSeptember 16, 2003
Term endedApril 13, 2018
Patent numberCA 2289480 C
Classification (IPC)H04J1/00 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedApril 13, 1998Patent grantedSep 16, 2003Term endedApril 13, 2018

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.