Animal control apparatus
CA 2068602 A1 · Owner: Custer, Daniel A. · Inventors: Custer, Daniel A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for confining the movement of an animal to a defined space includes a radio frequency transmitter including a perimeter wire to be placed at the boundary of the defined space and circuitry for sending a coded signal through the perimeter wire to generate a coded field and a, receiver that includes means responsive to the coded field for delivering an aversive stimulus to the animal, the receiver having means for arresting delivery of the aversive stimulus upon detection of a signal other than a coded signal.
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 13, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 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.