Contest card
CA 2220260 A1 · Owner: E Force Inc. · Inventors: Keresteci, Garo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A contest card having a scratch-off contest area to indicate whether or not the user has won, and also having a skill testing question and a set of scratch-off answer sections. The user scratches off a single answer section to reveal an indication of whether or not the user has answered the question correctly. The scratch-off answer sections remove the need for a pen or pencil and also eliminate the involvement of the store clerk in the answering procedure.
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 4, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2019.
- 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.