Device for dissemination of a spreadable material
CA 1290776 C · Owner: Winkel, Jan · Inventors: Winkel, Jan; Lamfers, Gerrit Jan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for disseminating spreadable material such as, fertilizer pellets or powders consisting substantially of a, frame (1) that is pulled or carried a storage holder (3) for, that material a dosage mechanism (4) fitted beneath the holder (3) and a reciprocally driven spreading pipe (12) connected to the mechanism (4) wherein on either side of the vertical longitudinal plane the spreader pipe (12) is provided with a surface for instance formed by a longitudinal rib (22) guiding the spreadable material said surface, enclosing an angle .alpha. with the vertical and extending at least over a part of or over the whole length of the pipe (12) so obtaining an even spread of the material and in …
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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 October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
- 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.