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Expired Canadian patentCanada

Press for extracting fluids from plants or ligneous materials

CA 1070554 A · Owner: Besnard, Rene · Inventors: Besnard, Rene

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

The present invention provides a press suitable for squeezing out the juice contained in ligneous materials. The press according to the present invention comprises a pressure roller of a relatively large diameter adapted to cooperate with a plurality of smaller cylindrical satellite rollers to press said ligneous material. The pressure roller has a substantially smooth surface while each of the satellite rollers has a lateral surface interrupted by a series of ring grooves. The base of each of said grooves is adapted to allow the squeezed out juices to pass therethrough while each of the ring grooves, at least adjacent to the lateral surface of a satellite roller is, bounded by opposite …

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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 January 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 29, 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—
GrantedJanuary 29, 1980
Term endedJanuary 29, 1997
Patent numberCA 1070554 A
Classification (IPC)B30B9/20

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 29, 1980Term endedJan 29, 1997

Sources & verification

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