Bird feeder
CA 2117951 A1 · Owner: Ayer, S. Gordon · Inventors: Ayer, S. Gordon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A container for dispensing feed to a number and variety of subjects. Primarily abird feeder. The container comprises a hollow body which can be filled with feed. The body has holes connecting it's exterior to it's interior. Due to the angle diameter and, depth of the holes the feed does not spill out through them but is contained within the central core of the container while at the same time it is accessible from the exterior through the holes. Since no deflectors or other mechanical devices are used to prevent the feed from spilling out the side holes of the container the flow of feed is smooth, and continuous with no opportunity for it to bind or hang up on such devices. The container …
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 October 2, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 2, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2016.
- 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.