Tamper evident package
CA 1295577 C · Owner: Lawrence, Richard R. · Inventors: Malsbury, Charles R.; Lawrence, Richard R.; Moreau, Glenn
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tamper-evident package for storing and dispensing comestibles and the like, comprising a. a cup formed of a sidewall member having at its open end, a rim with an unrolled peripheral edge; and, b. a lid configured and dimensioned for engagement with the cup at its open end such that when the lid is snapped onto the cup over the open end the, lid includes a panel member having along it periphery an annular rib configured and dimensioned so as to snapfittingly and sealingly engage with the cup at its open end, the annular rib formed of an inner wall member an, outer wall member having at least two spaced apart detent ribs of predetermined length for securing engagement with said cup …
Read the whole patent
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 February 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 11, 2009.
- 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.