Digital, interactive communication system
CA 1298908 C · Owner: It Network, Inc. · Inventors: Fischer, James L.; Mccalley, Karl W.; Wilson, Steven D.
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 digital interactive communication system accessible to a plurality of subscribers who can select by means of their touch-tone telephones any of a plurality of prerecorded video presentations representative of products and services for sale. In this system, the subscriber requests are received by a voice network interface which is coupled to a local area network. A plurality of data processors, typically single-board computers capable of, various tasks are operatively connected to the local area network. a number of these data processors are each dedicated to serving one subscriber during a requesting session. Other data processors coupled to the local area …
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
- Granted April 14, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 14, 2009.
- 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.