Method and apparatus for detecting interruptions in the transmission of light signals
CA 1196969 A · Owner: Cabloptic S.A. · Inventors: Wiedmer, Jean-Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for the detection of interruptions of light signal transmissions are disclosed wherein, on simultaneously sending light signals from an emitter to, a receiver, light signals pass through a loop of fiber optics and a direct circuit comprised of a transparent block. The detection of interrutions of light signal transmission is subject to cessation of simultaneous receipt of a first signal and a second signal normally received by the receiver.
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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 November 19, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 19, 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.