Flat top end closure for liquid container
CA 1237403 A · Owner: Ex-Cell-O Corporation · Inventors: Lisiecki, Robert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, A flat top liquid carrying, paperboard container including four side panels, and inner and outer pairs of top closure panels alternately connected by respective horizontal score lines to the top edges of the four side panels as extensions thereof. While the inner pair of top closure panels each typically includes a substantially triangular panel portion and a pair of integrally connected fold-back panels, the outer pair consists of one shorter and one longer panel. fold-over panel segment is formed on the end of the shorter panel. A diagonal opening-assist score line is formed on each of the shorter and longer panels and a, reverse diagonal opening-assist score line is formed on …
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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 May 31, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 2005.
- 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.