Playing surface
CA 2068057 A1 · Owner: Bartle, Richard J. E. · Inventors: Bartle, Richard J. E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A playing surface includes a representation surface and a dice trough adjacent to the representation surface. A rim is located adjacent to the dice trough with the dice trough, being interposed between the rim and the representation surface. The rim may be in the form of a lean rest. A transparent barrier is interposed between the dice trough and the representation surface.
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 May 6, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 6, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 6, 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.