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Expired Canadian patentCanada

Method and apparatus for producing enclosed bales of compressible material

CA 1049982 A · Owner: Fishburne, Francis B. · Inventors: Fishburne, Francis B.

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

Enclosed bales of compressible material such as tobacco are produced by forming a compressed cake of the material in a compression zone, placing the compression zone in communication with a laterally extending sleeve placing a, container such as a bag or carton over the sleeve in such fashion that a closed end of the container extends across the end of the sleeve, forcing the compressed cake of material through the sleeve, and positively moving the container off the sleeve at essentially the same rate at which the cake emerges from the sleeve.

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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 March 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 6, 1996.
  • 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—
GrantedMarch 6, 1979
Term endedMarch 6, 1996
Patent numberCA 1049982 A
Classification (IPC)B65B13/20 +2 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMarch 6, 1979Term endedMarch 6, 1996

Sources & verification

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