Methods of delivering multiple channels of audio and video by radio communications and cable
CA 2081985 A1 · Owner: Rutherford, John Gordon · Inventors: Rutherford, John Gordon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention comprises the use of a community communications facility that minimises the need for individual consumer equipment that in the case of antennas of the dish variety make, unsightly appendages to residential or commercial properties and, in the case of electronics for receipt and transmission of video and audio services, encryption, decoding compression, digitising, and other high technology transmission related activities, such are expensive and often impractical if the transmissions being received are too weak from distant sources or if terrestrial, are shaded by buidings or terrain features from the equipment of the end user. The high cost of trunk coaxial or fibreoptic …
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 October 19, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2014.
- 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.