Draw tape bag with two single draw tapes and method of manufacture
CA 1323336 C · Owner: Johnston, Shirley Knapp · Inventors: Johnston, Shirley Knapp; Olson, Robert Hutchins; Stell, Donald Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A draw tape bag with two single tapes has a front wall and back wall of flexible sheet material joined to each other along edges of the bag. Tubular channels extend along opposed transverse top edges of the front and back walls. The channels define an open mouth for the bag. Each of the channels has openings at the opposite ends of the top edges of the bag. A tape extends through each of the channels. One of the ends of each of the tape is attached to the opposite side edges of the bag beneath the openings in the channels and the other end of the tape extends through the respective opening at the other ends of the channels so that the tapes cross in their respective channels whereby when …
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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 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 19, 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.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.