Gaming device having symbol stacks
CA 2492435 A1 · Owner: Van Asdale, Shawn M. · Inventors: Van Asdale, Shawn M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gaming device is provided including a set of symbols on a plurality of reels and a symbol stack that includes an initially displayed symbol and at least one initially hidden symbol. In one embodiment the hidden symbols are stacked , beneath the displayed symbol. The initially displayed symbol may be removed to reveal an initially hidden symbol so that one or more different sets of visible symbols appears on the display device.
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 July 22, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 22, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2025.
- 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.