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Expired Canadian patentCanada

Machine for grinding hard workpieces

CA 1094323 A · Owner: Societe Europeenne Des Produits Refractaires · Inventors: Passerat, Jean-Louis; Parigot, Georges

CIPO record

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

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Abstract From the Canadian patent

MACHINE FOR GRINDING HARD WORKPIECES" Inventors : Georges PARIGOT, Jean-Louis PASSERAT Assignee : SOCIETE EUROPEENNE DES PRODUITS REFRACTAIRES ABSTRACT OF THE DISCLOSURE:-, Machine for grinding hard workpieces with an arm, equipped at one end with a grinding tool a machine base, supporting a table on which the workpiece is mounted and, an arrangement for supplying cutting liquid which comprises, in combination :, - an arm pivoted to swing up and down in a vertical plane which is fixed in position relative to the support - means for raising and lowering the arm - a table supported on hydraulic floatation feet to which a stream of cutting liquid is supplied - a machine base on which the table …

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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 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 27, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 9, 1979
GrantedJanuary 27, 1981
Term endedJanuary 27, 1998
Patent numberCA 1094323 A
Classification (IPC)B24B55/02 +2 more

Timeline

Timeline From CIPO dates

1980198219841986198819901992199419961998Application filedJan 9, 1979Patent grantedJan 27, 1981Term endedJan 27, 1998

Sources & verification

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