Display apparatus
CA 2080269 A1 · Owner: Maehashi, Kiyoshi · Inventors: Maehashi, Kiyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a display device for displaying a message an advertisement, decorations or the like by using a magnet. The display device comprises a display substrate in which a sheet-shaped magnet having many magnetic poles is provided on one side of a flat substrate so that the magnetized surface forms a surface and that surface is covered with a decorative laminated sheet (layer) on which a certain color or pattern is provided, and a magnetic plate including a magnet layer having many magnetic poles and formed on one or both surfaces thereof at the same pitch as that of the sheet-shaped magnet of the display substrate and a display part attached on the surface of the magnet layer, on which …
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 October 9, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2014.
- 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.