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Expired Canadian patentCanada

Self-illuminated fibre optic switch

CA 1282986 C · Owner: Kidder, John S. · Inventors: Montgomery, Derek; Kidder, John S.

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 fibre optic switch for controlling the electrical power to a load or for logical applications is disclosed in which the switch has a secondary guided light beam to provide status indicator light. The moulded plastic components of the switch are used to provide the means for light transmission and control.

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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 April 16, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 16, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 16, 1988
GrantedApril 16, 1991
Term endedApril 16, 2008
Patent numberCA 1282986 C
Classification (IPC)G02B6/00 +2 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedSep 16, 1988Patent grantedApril 16, 1991Term endedApril 16, 2008

Sources & verification

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