Radio channel visual identification system
CA 1192616 A · Owner: Canadian National Railway Company · Inventors: Field, Robert C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A visual identification system for a multi-channel radio is provided which produces a flashing light identifying a particular radio channel visible in all directions. The visual identification system comprises a plurality of lights each light having a different colour, mounted in a visible location in close association with each other a light, selector means to select one of the plurality of coloured lights to flash, a flash selector means to select a predetermined number of flashes for the particular light and, an interconnect from a channel selector switch to a channel selector decode means which decodes a particular channel selection and signals the light selector means and flash …
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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 August 27, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 27, 2002.
- 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.