Luminescent display device
CA 2308523 A1 · Owner: Turk, David A. · Inventors: Turk, David A.; Andrews, Dean T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for displaying identifying indicia resembling alphanumeric characters or symbols for use on signs or which may be, placed on houses or buildings to indicate their location on a street. The device comprises a substrate made of a metallic alloy or other material and a top layer of luminescent material. The visible portion of the top surface of the substrate resembles the identifier to be displayed and can be easily seen in daylight, while the layer of luminescent material which also resembles the identifier can be easily seen in the dark.
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 May 11, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 11, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2022.
- 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.