Free standing signalling and message printing system
CA 2066459 A1 · Owner: B.T.I. Computers Inc. · Inventors: Philip, Heller; Jensen, Tom P.; Rabinowitz, Alan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multi console or remote unit non-integrated message handling system, particularly adapted to be a message taking and alerting system for use in conjunction with a local telephone network such as is found in many businesses, the network having a plurality of individual telephones served by at least one central operator to receive incoming messages and to service unanswered telephone calls. The system has a central unit or station which is under the control of the central operator. The consoles or remote units are connected to the central unit or station via a data transmission link. In one embodiment the link is performing through repeater units wired to the central unit and performing …
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 September 27, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 27, 2012.
- 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.