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Expired Canadian patentCanada

Switch bridge arrangement for an electrical switch

CA 1266074 C · Owner: Square D Starkstrom Gmbh · Inventors: Lemmer, Helmut

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

In a switching bridge arrangement for an electrical switch, such as a circuit breaker, wherein a plurality of contact bridges,biased by contact springs, are movable in a plurality of windows provided in the switch housing each contact spring is, formed as a leaf spring pressed in the respective window against the contact bridge and is provided with a recess in which a projection formed on the wall of the window is engaged. -1-

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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 February 20, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 2007.
  • 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 27, 1985
GrantedFebruary 20, 1990
Term endedFebruary 20, 2007
Patent numberCA 1266074 C
Classification (IPC)H01H1/20 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedMarch 27, 1985Patent grantedFeb 20, 1990Term endedFeb 20, 2007

Sources & verification

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