Doorbell activating device for pets
CA 1258306 A · Owner: Gunoff, Gordon E.L. · Inventors: Gunoff, Gordon E.L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A doorbell ringing device for pets. Consisting of a movable device to be hung respectively on the outer surface of a house or other building for yieldable movement under the impetus of a pets clawing or scratching thereagainst activating a electrical switch, which provides a audible means to indicate that the animal desires ingress.
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 August 8, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 8, 2006.
- 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.