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Expired Canadian patentCanada

Tool operated pushbutton mechanism for controlling the actuation of a panel-latching system

CA 1263541 C · Owner: Northern Telecom Limited · Inventors: Beun, Roger A.

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

Abstract of the Disclosure, The mechanism comprises a pivotally mounted lever member having a pushbutton portion and having its free end adapted for engagement of the actuator in a panel-latching system. An annular lock cylinder is mounted transversely underneath the pushbutton portion and is provided with a slot adapted to accommodate a portion of the pushbutton portion. One end of the cylinder has its surface formed into a cavity having a predetermined pattern whereby the lock cylinder may be rotated only by engagement with a tool adapted to engage the patterned cavity. The cylinder is rotatable to at least first and second positions whereby in the first position the lever, member is …

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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 December 5, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 5, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 13, 1987
GrantedDecember 5, 1989
Term endedDecember 5, 2006
Patent numberCA 1263541 C
Classification (IPC)G05G1/04 +2 more

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedJan 13, 1987Patent grantedDec 5, 1989Term endedDec 5, 2006

Sources & verification

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