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Expired Canadian patentCanada

Electron gun assembly having a reinforced heater tab with locating means

CA 1312909 C · Owner: Thomson Consumer Electronics, Inc. · Inventors: Hale, John Richard

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

RCA 85,218, ABSTRACT OF THE DISCLOSURE An electron gun assembly for use in a color CRT includes a pair of insulating support rods three inline, indirectly heated cathodes disposed between the support rods, a heater for each of the cathodes and a pair of, improved, reinforced heater tabs. The heater includes a pair of heater legs which are attached to the heater tabs. Heater bead straps are provided for attaching the heater tabs to the support rods. The electron gun also includes a plurality of electrodes for focusing and accelerating an electron beam generated by the cathodes. The reinforced heater tabs comprise a main body portion including a first and a second part. Each of the parts 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

  • Granted January 19, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 19, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 20, 1989
GrantedJanuary 19, 1993
Term endedJanuary 19, 2010
Patent numberCA 1312909 C
Classification (IPC)H01J29/48 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedJuly 20, 1989Patent grantedJan 19, 1993Term endedJan 19, 2010

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