Directed telephone system
CA 2242204 A1 · Owner: Mokhtar, Magid · Inventors: Mokhtar, Magid
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The Directed Telephone System (DTS) enhances the operation of group of telephones, connected to a Central Office line. The system sends a brief pre-recorded message asking, the caller to press one digit out of a menu of names and corresponding digits. On, receiving that digit DTS directs the incoming call to a particular telephone set and alerts, only the called person by a unique ring code. The DTS provides personalised intercom, calls using the existing normal telephones and alert the called person with the same ring, code. The system also connects a fax call directly to the fax machine. A DTS unit can be constructed on a circuit board that can be fitted inside each telephone, set …
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 July 27, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 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.