Switch for telephone line
CA 2289954 A1 · Owner: Ventura, Paul A. · Inventors: Ventura, Paul A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a method and apparatus of automatically switching functionality of telephone lines in an office telephony system from a first function, to a second function based on predetermined criteria. In order to avoid wasting telephone, line resources in an office system a switch is provided to switch the , functionality of a telephone line from voice communication to data communication and vice versa. The, predetermined criteria may include time of day or the day of the week. The switch is a , self-contained unit which also monitors the telephone lines.
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 November 16, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 16, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 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.