Wired tv broadcasting system using an optical fibre, transducer and detector
CA 1058293 A · Owner: Communications Patents Limited · Inventors: Cutler, Albert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wired broadcasting system is provided in which a signal path between a central station and at least some of a plurality of subscribers includes an optical fibre extending between an electro-optical transducer and a photo-sensitive detector. The optical fibre may extend over the whole length of the transmission path between the central station and each of the plurality of subscribers, or the optical fibre may extend between the central station and a distribution point from which signals may be conveyed to a group of subscribers over conductive paths, or an optical fibre may be arranged to extend between each of the plurality of subscribers and a programme selector located at a programme …
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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 July 10, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 10, 1996.
- 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.