Apparatus and method for supplying liquid to a tree stand
CA 2235087 A1 · Owner: Jacques, David R. · Inventors: Jacques, David R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for providing a liquid to a plant or tree stand comprising a liquid reservoir connected via tubing to a liquid control assembly having a liquid level control section positioned on the lower end of an adjustable vertical section with straps for attachment to a tree. The liquid level control section comprises a lever arm/float assembly positioned within the tree stand for maintaining a predetermined liquid level within the tree stand. As the liquid in the tree stand is depleted the float drops and the opposite end of a float lever arm penetrates a channel raising a metal ball which permits liquid to enter the tree stand through the liquid level control assembly connected to the …
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, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 2020.
- 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.