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Expired Canadian patentCanada

Fiber optic wiring device control system

CA 1255754 A · Owner: Leviton Manufacturing Company, Inc. · Inventors: Neiger, Benjamin B.

CIPO record

Overview

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

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Abstract From the Canadian patent

The present invention teaches a control system wherein fiber optics controls the functioning of one or more types of wiring devices, such as a wall receptacle. With the use of the present invention, a relatively safer system is provided for use in wet, hospital, explosive and other environments, and which is capable of surface mounting. Switch and load supply assemblies are interconnected by fiber optic means for transmitting reflected signals from a movable mirror to a photocell-influenced relay circuit.

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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 June 13, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 13, 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.
FiledApril 28, 1987
GrantedJune 13, 1989
Term endedJune 13, 2006
Patent numberCA 1255754 A
Classification (IPC)H01H47/24

Timeline

Timeline From CIPO dates

1988199019921994199619982000200220042006Application filedApril 28, 1987Patent grantedJune 13, 1989Term endedJune 13, 2006

Sources & verification

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