Illuminated sign
CA 2035557 A1 · Owner: Noma Inc. · Inventors: Layne, Clifford J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An illuminated sign comprises front and back sheets central, portions of which are generally planar. The front sheet carries design elements thereon certain of which are intended to be highlighted. The back sheet has portals therein generally opposed to the areas to be highlighted and which are closed by flaps which may form a unitary part of the back sheet. The portals provide access to lamps contained within the sign. The sign is easily mounted from a ground surface and is economic to manufacture for use as a seasonal decoration.
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 February 1, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 1, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 1, 2013.
- 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.