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Expired Canadian patentCanada

Method of and apparatus for producing infusible bag holders

CA 1285205 C · Owner: Christie, Hugh P. · Inventors: Christie, Hugh P.

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 method of an apparatus for attaching a cover to an infusible bag the, apparatus comprising a bed on which a cover strip is fed. The bags are fed to the cover strip, and the heat sealer and crease blade attach the bag and crease the cover strip adjacent the heat sealer. A knife cuts the 5. cover strip to length and the cover strip is folded about the bag by a blade and rollers.

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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 June 25, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 25, 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.
FiledMay 13, 1987
GrantedJune 25, 1991
Term endedJune 25, 2008
Patent numberCA 1285205 C
Classification (IPC)B65B29/04

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedMay 13, 1987Patent grantedJune 25, 1991Term endedJune 25, 2008

Sources & verification

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