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Expired Canadian patentCanada

Rating plug enclosure for molded case circuit breakers

CA 1290373 C · Owner: Wambolt, Lee Anne · Inventors: Wambolt, Lee Anne; Rajotte, Paul Thomas; Morris, Robert Allan

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 molded plastic rating plug enclosure houses the molded case circuit breaker rating plug printed circuit board. The rating plug enclosure is inserted within the circuit breaker cover and is adapted for removal from the circuit breaker cover by means of a special extractor tool. Access means for connecting a test jack with the circuit breaker trip unit printed circuit board and visual access means for an indicating diode are formed within the cover of the rating plug enclosure.

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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 October 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 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.
FiledMarch 24, 1988
GrantedOctober 8, 1991
Term endedOctober 8, 2008
Patent numberCA 1290373 C
Classification (IPC)H01H71/74 +1 more

Timeline

Timeline From CIPO dates

1989199119931995199719992001200320052007Application filedMarch 24, 1988Patent grantedOct 8, 1991Term endedOct 8, 2008

Sources & verification

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