A corner irrigation system
CA 2307530 A1 · Owner: Christensen, Dale A. · Inventors: Gerdes, Jerry D.; Christensen, Dale A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An irrigation system is disclosed which includes a center pivot support having an elongated main water boom pivotally connected thereto which extends outwardly therefrom. An elongated extension boom is pivotally connected at its inner end to the outer end of the main boom and is supported by a steerable drive, tower. A corner arm sensor is provided for sensing the angle of the extension boom with respect to the main boom. A plurality of first sprinklers are positioned, on the extension boom along the length thereof and a plurality of second sprinklers are positioned on the extension boom along the length thereof. The water which is normally allocated to the end gun on the outer end of the …
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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
- Filed May 4, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 4, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 4, 2022.
- 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.