Miniature bowling game
CA 2071441 A1 · Owner: Stanford, Calvin J. Jr. · Inventors: Stanford, Calvin J. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bowling game table featuring a lane surface having a bilaterally symmetrical central trough which beginning at a point, proximate the edge from which the ball is rolled toward the pins gradually expands in width and increases in depth until it reaches a maximum depth, and continues expanding in width until it spans the entire width of the lane surface while maintaining said maximum depth.
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 June 17, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 17, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 17, 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.