Wireless extension arrangement for a communications system
CA 2477562 A1 · Owner: Interax Interactive Television Solutions Pty Ltd · Inventors: Elms, Scott Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided is a wireless extension arrangement (10) for a communications system having a telephone network (30). The arrangement (10) comprises one or more first transceiver units, (14) each said first transceiver unit having a state supervision means (70,71,73) and being associated with at least one communications apparatus (60), and a second transceiver unit (16) arranged for wireless communication with the or each said first transceiver unit (14). The supervision means (70,71,73) is arranged to generate a dial tone when an associated communications apparatus (60) is in an off hook state and a ring , tone when receiving a ring control signal from said second transceiver unit (16). …
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 February 26, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2025.
- 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.