Tamper indicating package
CA 1309972 C · Owner: Keller, Robert G. · Inventors: Keller, Robert G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The tamper indicating package includes a receptacle such as a jar having a cover member threaded thereon. The mouth of the jar is sealed beneath the cover member with a seal member. The cover member has a depending flange with a slot that accommodates a tab indicating member joined to the seal member or formed integrally with the seal member. Rotation of the cover member from a predetermined closed limit position causes the slot in the cover member to interfere with the tab indicating member. The interference causes partial or complete severance of the tab indicating member from the seal member, providing a visible indication of previous tampering with the package.
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 November 10, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 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.