Device for controlling ectoparasites
CA 1232454 A · Owner: Nor-Am Chemical Company · Inventors: Hall, John N.; Hack, Richard J.; Samluk, Stanley D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device or dispensing liquid pesticide which comprises a reservoir of liquid pesticide which can be attached to an animal a fibrous wick having a diameter of less than three millimeters communicating with the liquid in the reservoir said wick extending, outwardly and sealably from the reservoir whereby liquid can, pass out of the reservoir only along the wick and venting means, in the reservoir to prevent negative pressure developing inside the reservoir.
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 February 9, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 9, 2005.
- 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.