Panel for displaying information such as advertising messages
CA 2087709 C · Owner: Lopez Perez, Jose · Inventors: Lopez Perez, Jose
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
It is comprised of a base (1) provided with wheels (2) for sliding on rails (3), on which base is adjustably mounted as regards inclination a frame including two side plates (4) on which are established two idler rollers (18) for a laminar body (17) carrying different messages, and two further rollers (21) for winding/unwinding the said laminar body (17) which are operated by respecified electric engines (22-22') and which, duly controlled by a computer program allow the messages, displayed on the panel to be changed after a specified length of time.
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 8, 1991 and granted January 22, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 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.