Out-of-bounds monitor for court games
CA 2038898 A1 · Owner: Hancharyk, John S. · Inventors: Hancharyk, John S.; Braun, Timothy N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for monitoring a designated surface area of a playing court comprises a plurality of transmitters for producing electromagnetic pulses alongparallel paths in a plane paralleling the area and in close proximity thereto the, paths extending between opposite ends of the area and being transversely spaced apart by a distance which is less than or equal to the diameter of a playing ball used in the court, the transmitters being disposed along one of the ends of the plane, a plurality of receivers, one associated with each transmitter to form a transmitter-receiver pair, disposed at the opposite end of the plane from its associated transmitter and along the path of the pulse produced …
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 March 22, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 22, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 2013.
- 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.