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Expired Canadian patentCanada

Apparatus and method for controlling a system for feeding plants, based on actual and projected data and according to predefined rules

CA 1333293 C · Owner: Bauerle, William L. · Inventors: Bauerle, William L.; Fynn, Robert P.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A nutrient control system for nourishing plants. An injector provides a quantity of nourishment having individual concentrations of specific nutrients. A conduit distributes the quantity of nourishment to the plants. First storage memory stores initial data relating to the plants being nourished. A computer selects the amounts of specific nutrients and selects the quantity of nourishment to be applied to the plants based on the initial data in the first storage memory and, responsive to the selection controls the, injector to adjust the individual concentrations of the specific nutrients and the quantity of nourishment to be supplied to the plants as a function of the selected amounts of …

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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 November 29, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 29, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 10, 1989
GrantedNovember 29, 1994
Term endedNovember 29, 2011
Patent numberCA 1333293 C
Classification (IPC)A01G13/00 +1 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedAug 10, 1989Patent grantedNov 29, 1994Term endedNov 29, 2011

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.