Technique for promoting catv pay-per-view events and acknowledging subscriber orders
CA 1253615 A · Owner: Westinghouse Electric Corporation · Inventors: Kohn, Elliott S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
52,358, ABSTRACT OF THE DISCLOSURE, In CATV systems employing one-way addressable converters in a subscriber's premise, a computer at the system head-end develops tagged messages for display on the subscriber's television to both promote upcoming pay-perview events and to acknowledge a subscriber's order for the pay-per-view event.
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 May 2, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 2, 2006.
- 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.