Apparatus for spreading granular material, especially for the treatment of roads
CA 2306609 A1 · Owner: Pradines, Rene · Inventors: Pradines, Rene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for spreading a granular material comprises a conveyor designed to move the material from a hopper to a distributor. The conveyor comprises two endless cables mounted in parallel and each passing around two end pulleys, parallel transverse bars each attached to the cables at regular intervals and designed to move the material on a transport surface and a driving device designed to move the cables in synchronism. The granular materials may be for the winter treatment of roads.
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 April 26, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 26, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 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.