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Expired Canadian patentCanada

Apparatus for interlocking a pair of panels

CA 1297330 C · Owner: The Mead Corporation · Inventors: Calvert, Rodney K.

CIPO record

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Drawings and full text

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

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Abstract From the Canadian patent

Apparatus for interlocking a pair of panels which may constitute the end portions of a wrap around carton blank one of the panels having an edge strip with at least one locking aperture wherein and which is foldably joined to an edge of the associated panel, the other panel being formed integrally with the body portion of a locking tab and an anchoring tab being foldably joined to the body portion of the locking tab, the apparatus including an elongated locking beam having a longitudinal locking groove formed in the lower surface thereof, means for moving a carton and its end panels along the beam and with the panels adjacent the groove, a rotatable strip folder arranged to engage and fold …

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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 March 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 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.
FiledDecember 9, 1988
GrantedMarch 17, 1992
Term endedMarch 17, 2009
Patent numberCA 1297330 C
Classification (IPC)B65B11/10 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedDec 9, 1988Patent grantedMarch 17, 1992Term endedMarch 17, 2009

Sources & verification

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