Illuminated indication device for road traffic
CA 2333500 A1 · Owner: Friebolin, Lothar · Inventors: Friebolin, Lothar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an illuminated indication device for road traffic. A number of indicating points are formed with indicating lenses (1) in or on an indicating surface. Said indicating lenses have a light entry surface (9) and a light exit surface (8) and are illuminated by the rear face of the indicating surface, which consists of individually allocated light-emitting elements with a small diameter. The aim of the invention is to make the indication device easier to read. To this end the light entry surface (9) , and/or the light exit surface (8) is/are shaped in such a way that the distribution of light intensity on the indicator surface extends further in a horizontal …
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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
- Filed April 14, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 14, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 14, 2021.
- 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.