Random indicia selector
CA 1186352 A · Owner: Chaput, Joseph R. · Inventors: Chaput, Joseph R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A random number selector has a compartment that accommodates balls of two contrasting colours e.g. black and white. Overlying the compartment is a window on which are marked indicia to be selected e.g. numbers. The indicia also are black. Certain of the numbers are masked and rendered invisible by the black balls located behind them. The numbers to be selected are highlighted by the colour-contrasting white balls.
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
- Granted April 30, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2002.
- 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.