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Expired Canadian patentCanada

Cheese extrusion device

CA 1290716 C · Owner: Lindgren, Donald R. Sr. · Inventors: Lindgren, Donald R. Sr.; Lindgren, Donald S. Jr.

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 device for extruding cheese pieces; warm plastic cheese is extruded into a bore; a piston seals one end of the bore and a cheese working plate seals the other end; a mold is positioned below the bore, the mold top in sliding engagement with the cheese working plate, the mold bottom in sliding engagement with a mold support plate; holes in the cheese working plate in the, mold and in the support plate, align with the bore; the piston is forced through the bore, forcing the cheese in the bore at high, pressure, through the holes in the working plate filling the, mold holes with cheese; when the mold holes have filled continued pressure by the piston forces a small amount of cheese out of …

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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 October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 24, 1989
GrantedOctober 15, 1991
Term endedOctober 15, 2008
Patent numberCA 1290716 C
Classification (IPC)B29C33/34 +2 more

Timeline

Timeline From CIPO dates

1990199219941996199820002002200420062008Application filedFeb 24, 1989Patent grantedOct 15, 1991Term endedOct 15, 2008

Sources & verification

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