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Expired Canadian patentCanada

Apparatus for treating fibre material containing liquid

CA 1309610 C · Owner: Eriksson, Sture · Inventors: Jonsson, Ann-Sofi; Jonsson, Bengt; Eriksson, Sture

CIPO record

Overview

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

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Abstract From the Canadian patent

An apparatus for treating fibre material containing liquid com-, prising two rotating drums (2, 3) an endless driven belt (17), pervious to liquid and gas and extending between and passing around the surfaces (8, 9) of the drums a feeding means (10) for, the supply and a discharging means (13) for the removal of the fibre material, at least one container for collecting liquid the, liquid being displaced from the fibre material through the endless driven belt (17), a continuous wall means (18) impervious to liquid and gas and extending along a main part of and at a distance from the belt (17) from the feeding means (10) to the discharging means (13) in such a manner that a continuous space …

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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 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 3, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 2, 1987
GrantedNovember 3, 1992
Term endedNovember 3, 2009
Patent numberCA 1309610 C
Classification (IPC)D21C1/02 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJune 2, 1987Patent grantedNov 3, 1992Term endedNov 3, 2009

Sources & verification

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