Tamper-proof bottle cap and container
CA 1047969 A · Owner: Cochrane, Benjamin A. · Inventors: Cochrane, Benjamin A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A. COCHRANE residing at 181 Senora Avenue in the County of Contra Costa City of, Danville, State of California 94526 has invented a, new and useful invention in: TAMPER-PROOF BOTTLE CAP AND CONTAINER, ABSTRACT OF THE DISCLOSURE An improved bottle cap particularly useful for returnable containers is disclosed. The cap is composed of a top disk, a thin-walled cylindrical outer skirt and a coaxial inner skirt. The outer skirt is weakened along two circumferential score lines which traverse the skirt in an arc of about 250 to 358 degrees forming a weakened cylindrical band around most of the outer skirt. A narrow strip connecting the upper portion of the skirt to the lower portion is left …
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 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 1996.
- 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.