A hydroponic apparatus
CA 2437749 A1 · Owner: A & B Hydroponics International Pty Ltd. · Inventors: Agius, Joseph
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hydroponic apparatus comprising: (a) troughs (12 13, 14, 15, 16) linked , together to form a continuous track located on guide wheel members (24 26, 28, 30) in a support frame (32, 34) (b) a liquid supply means (36) to supply liquid to the troughs (12-16), wherein in operation, the addition of liquid , to one/some of the troughs (12-16) alters the weight distribution of the troughs (12-16) causing the track to move on the guide wheel members (24 26, 28, 30) and thus allowing the troughs (12-16) which have become lighter as liquid is consumed by the plants and/or is lost through evaporation to move into position to be replenished with liquid. This movement is a continuous cycle …
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 January 31, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 31, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 31, 2024.
- 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.