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Expired Canadian patentCanada

Leaf spring system and an electric switch provided with such a leaf spring system

CA 1330574 C · Owner: Holec Holland N.V. · Inventors: Van Der Scheer, Derk; Postmus, Albert Jozef Peter

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Abstract From the Canadian patent

A leaf spring system, in particular for influencing at least one body operating or comprising one or more contacts of an electric switch, with a chassis and at least one leaf spring which can act on the at least one body. Said leaf spring system comprises a supporting frame for receiving in the frame aperture thereof supported at one end, the at least one leaf spring while in the, frame aperture between the projecting free end of the leaf spring and the edge of the supporting frame - situated opposite that endthe at least one body to be influenced by the spring action can be accomodated. The dimension of said body in the frame aperture being greater than the distance between the said edge …

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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 July 5, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 29, 1988
GrantedJuly 5, 1994
Term endedJuly 5, 2011
Patent numberCA 1330574 C
Classification (IPC)H01H5/14 +1 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedDec 29, 1988Patent grantedJuly 5, 1994Term endedJuly 5, 2011

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