Mobile signs
CA 2055893 C · Owner: Cambridge Mobile Signs Incorporated · Inventors: Cordeiro, Phil; Cordeiro, Emanuel; Cordeiro, Joe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sign for roadside advertising purposes comprising a box-like casing having a top, bottom and two side walls. Tracks disposed within the casing substantially parallel to the top and bottom walls and substantially at right angles to the side walls. A frame, or plurality of frames is, receivable in the track and may be secured therein by a suitable lock mechanism. The frame comprises a plurality of plate-receiving compartments. These compartments are disposed adjacent to each other and are each adapted to slidably receive a single plate therein. The plates are manufactured from any suitable light transparent material and appropriate letters, numbers or symbols are marked thereupon. When 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 November 20, 1991 and granted July 12, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 20, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 20, 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.