Method and apparatus for providing a signal indicating the approximate amount of elapsed time
CA 2262665 A1 · Owner: Giacalone, Louis David Jr. · Inventors: Giacalone, Louis David Jr.; Pascal, Andrew; Barnett, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The system relates to a signaling system which provides as part of the signal an indication as to the approximate elapsed time since the activation of the signal, and includes one or more event detectors (16) which monitor operation of a gaming unit (10), and upon sensing the occurrence of an event generates outputs on lines (17, 18). Detector (16) may also be configured to respond to a manual input mode via a switch "S". The output on line (17) causes the timer (20) to be started and a rate controller (22) to be energized. Timer (22) responds to the elapsed time input from timer (20) to control the nature of the signals to be developed by a signal generator (24). A multi-plexor …
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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 28, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 28, 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
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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.