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Expired Canadian patentCanada

Lock

CA 1305333 C · Owner: Nulock Industries Pty. Ltd. · Inventors: Nugent, Walter Joseph

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 lock has a drive member which is moved to actuate the lock. A plurality of elongate members are connected to the drive member, one end of each elongate member being inserted in a respective spring-biassed plunger. A first contoured element locates the plungers in position. An appropriate key must be inserted with a contoured surface in contact with a second set of plungers to align passages in the second set of plungers with the ends of the elongate members to enable the elongate members to move, thus permitting the lock to be opened.

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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 July 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 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.
FiledMarch 11, 1988
GrantedJuly 21, 1992
Term endedJuly 21, 2009
Patent numberCA 1305333 C
Classification (IPC)E05B65/00 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 11, 1988Patent grantedJuly 21, 1992Term endedJuly 21, 2009

Sources & verification

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