Tamper-evident closure
CA 1265766 C · Owner: Willis, W. Coy · Inventors: Willis, W. Coy; Albrecht, Leman P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A tamper-evident closure adapted for assembly with a container includes a band which, upon first opening completely, separates from a cap portion and which upon reclosing the, container with the cap is dislodged from engagement with the, container to insure that the band alls freely around a neck portion of the container to provide a substantial space between the cap and the band and thereby provide readily discernible evider,ce tha~ the contalner has been previously opened.
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 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 2007.
- 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.