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Expired Canadian patentCanada

Powder rolling apparatus

CA 1090974 A · Owner: Inco Limited · Inventors: Oakley, Samuel T.

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

Powder rolling apparatus for the production of, strip equal in width to the roll length is provided with, edge restraint devices in the form of cylindrical blocks mounted in the roll gap region with their axes parallel to the roll axes and rotatably driven to cause an endface of each restraint block to move in frictional contact with the end-faces of the rolls.

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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 December 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 9, 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.
FiledJuly 18, 1978
GrantedDecember 9, 1980
Term endedDecember 9, 1997
Patent numberCA 1090974 A
Classification (IPC)B22F3/18 +1 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedJuly 18, 1978Patent grantedDec 9, 1980Term endedDec 9, 1997

Sources & verification

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