Illuminated sign
CA 2128444 A1 · Owner: Simpson, John James · Inventors: Genser, David; Sheridan, Grant A.; Simpson, John James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An illuminated sign is described including an impact resistant transparent face plate having a peripheral edge an, exterior face and an interior face. An alpha-numeric message is placed in reverse image on the interior face of the face plate. An impact resistant back plate is provided having a peripheral edge, an exterior face and an interior face. The interior face of the back plate faces the interior face of the face plate. An electroluminescent light panel is sandwiched between and in contact with the interior face of the face plate and the interior face of the back plate. Conductive wires are provided having a first end connected to the light panel and a second end projecting past 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 July 20, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 20, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 20, 2016.
- 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.