System and method for signal transmission
CA 2111515 A1 · Owner: Lord, Randal Bruce · Inventors: Lord, Randal Bruce
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A light signal transmitter for providing an output light signal corresponding to an input signal having a characteristic varying with time, comprises an electrooptic transmitter device drivable for generating output light signals of diverse light frequencies and drive circuitry for receiving the input signal and for so driving the electrooptic transmitter device responsively thereto to cause generation thereby of output light signals having frequencies differing with time correspondingly with characteristic variations of the input signal, all of such output light signal frequencies exceeding an output light signal frequency of the electrooptic transmitter device generated thereby in the …
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 December 15, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 15, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 15, 2015.
- 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.