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Expired Canadian patentCanada

Combined lock structure for article carrier

CA 1236804 A · Owner: Certipak Corporation · Inventors: Lever, John K.; Humphries, Richard L.; Collura, Peter C.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A thread and punch lock for article carriers (10) includes a first closure panel (21) with a plurality of spaced tongues (25) along its terminal end. A locking tab (39) is provided in longitudinal line with each tongue and adjacent thereto. The tab (39) extends in opposing direction to the tongue; the tab and tongue together forming a locking unit (40). The second closure panel (23) includes two substantially parallel trans-, versely elongated slits (33, 35) for receiving each locking unit (40) when the closure panels (21, 23) are in proper overlapping relation. Disposed between these slits (21 23) is the closure panel material forming a protector strap (38). The closure panels (21, 23) are …

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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 17, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 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.
FiledApril 25, 1984
GrantedMay 17, 1988
Term endedMay 17, 2005
Patent numberCA 1236804 A
Classification (IPC)B65D5/04 +1 more

Timeline

Timeline From CIPO dates

1985198819911994199720002003Application filedApril 25, 1984Patent grantedMay 17, 1988Term endedMay 17, 2005

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.