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Expired Canadian patentCanada

Transistor mounting clamp assembly

CA 2110187 C · Owner: Radio Frequency Systems, Inc. · Inventors: Testa, Martina B.; Smith, Robert P.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A transistor mounting clamp assembly for ensuring reliable electrical connection of a power transistor electrical connector tab (typically the collector tab) to a metallized portion of an associated printed circuit board. The transistor mounting clamp assembly comprises a top and bottom clamp dimensioned for sandwiching therebetween the transistor tab. The clamp assembly uses a machine screw and associated Belleville washer for maintaining this urging relationship even when the components expand and contract. The bottom clamp preferably has a stepped region or other surface discontinuity for securing the connector tab thereto. The clamp assembly further comprises an extending tab which is …

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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

  • Filed November 29, 1993 and granted September 7, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 29, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 29, 1993
GrantedSeptember 7, 1999
Term endedNovember 29, 2013
Patent numberCA 2110187 C
Classification (IPC)H05K1/18 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedNov 29, 1993Patent grantedSep 7, 1999Term endedNov 29, 2013

Sources & verification

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