Interactive visual communications system
CA 1234936 A · Owner: Her Majesty The Queen, In Right Of Canada, As Represented By The Ministe R Of Communications · Inventors: Bown, Herbert G.; O'Brien, C. Douglas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Herbert G. Bown, C. Douglas O'Brien ABSTRACT OF THE DISCLOSURE, The interactive visual communications system consists of a number of similar terminals linked together by narrow band communications links. Each terminal consists of visual display apparatus having a display and a display generator, an input interactive device for providing input instructions at the terminal a processor for processing, graphic task instructions (GTI's) to control the display system and the input interactive device. The generated graphic task instructions are directed through an interaction handler which directs the GTI's to the processor as well as to a modem for transmission over a narrow band communications …
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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 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 5, 2005.
- 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.