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Expired Canadian patentCanada

Closure for the fluid-tight closing of bags, thin-walled tubes and the like

CA 1318772 C · Owner: Folkmar, Jan · Inventors: Folkmar, Jan

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

A closure for a bag (not shown) such as a plastic, bag for freezing shaped lumps of ice for cooling drinks consists of a channel member adapted to receive an insertion member. Before the insertion member is pressed into the channel member, the end of the bag (not shown) is inserted between the two, being closed in a fluid-tight manner when the two members, in the example shown interconnected by a hinge, are pressed together. The closure makes it possible to close bags for freezing ice lumps in a fluid-tight manner, allowing the bags to lie down in a deep-freeze cabinet without leaking and also making it easier to open the bags than when these are closed by means of knots or the like.

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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 8, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 8, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 18, 1986
GrantedJune 8, 1993
Term endedJune 8, 2010
Patent numberCA 1318772 C
Classification (IPC)B65D77/10 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedAug 18, 1986Patent grantedJune 8, 1993Term endedJune 8, 2010

Sources & verification

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