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Expired Canadian patentCanada

Spreading tank

CA 1080270 A · Owner: Lucas G. S.A. · Inventors: Lucas, Gustave

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A transportable tank is disclosed for use as a manure spreader or for distributing foodstuff for livestock in a cattle barn. The tank is adapted to be towed by a tractor and connect ed the tractor power takeoff through a chain and sprocket arrangement. Shallow conveyor screws are provided on the bottom of the tank and carry the substance therein to the front or rear depending on their direction of rotation. A circular plate is fixed to a hollow shaft connected to the chain and sprocket arrangement and has a plurality of ejection fan blades. Several toothed shredding rotors are disposed radially and mounted for rotation about their respective axes and orbitally about the axis of the circular …

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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 June 24, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 24, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJune 24, 1980
Term endedJune 24, 1997
Patent numberCA 1080270 A
Classification (IPC)A01C3/06 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJune 24, 1980Term endedJune 24, 1997

Sources & verification

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