Liquid transfer device
CA 1215541 A · Owner: Torrance, Donald M. · Inventors: Torrance, Donald M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tube contains a liquid absorbent material an end, portion of which can be immersed in the liquid contained within a bag positioned about a tree and transfer the liquid at a rate dependant on the attitude of the tube to the end of the tube inserted in the ground adjacent the root structure of the tree.
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 December 23, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 23, 2003.
- 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.