Educational aid with substitutable magnetic items
CA 2034667 A1 · Owner: House, Charles E. · Inventors: House, Charles E.; House, Charles E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An educational and entertaining device stimulates learning, creativity, imagination, and artistic interpretation. The principal elements in the device are flexible magnetic character pieces and geometrically shaped metallic chips which when, magnetized, form solid replicas in the shape of the flexible magnetic character pieces. The invention is activated by placing a preformed, flexible magnetic alphabet letter, numeral, animal or other character piece on an image board located in a bottom half of the device. Alternatively, separate magnetic character pieces may also be placed on the image board to form a series of artistic impressions. Once the device is closed and secured, the user shakes …
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 January 21, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 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.