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Expired Canadian patentCanada

Convertible selector switch

CA 1101475 A · Owner: Westinghouse Electric Corporation · Inventors: Dobrosielski, Stephen S.; Johnston, Robert J.; Layciak, Stephen G.

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 rotary selector switch characterized by a rotatable switch actuator and at least two switch structures the, actuator having a shaft on which a handle is detachably mounted for operation in a plurality of modes to operate the switch structures in different combinations of open and closed conditions, the handle being detachably mounted on the shaft for rotating a cam through one limited sector thereof, the handle being repositionable on the shaft for rotation through another limited sector thereof and the, handle being rotatable between a pair of spaced ribs on the switch housing.

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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 May 19, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 31, 1978
GrantedMay 19, 1981
Term endedMay 19, 1998
Patent numberCA 1101475 A
Classification (IPC)H01H3/08 +2 more

Timeline

Timeline From CIPO dates

1979198119831985198719891991199319951997Application filedOct 31, 1978Patent grantedMay 19, 1981Term endedMay 19, 1998

Sources & verification

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