H - Electricity – 01 – J
Patent
H - Electricity
01
J
355/7
H01J 29/52 (2006.01) H04N 9/20 (2006.01) H04N 9/73 (2006.01)
Patent
CA 1151313
IMPROVEMENTS RELATING TO MULTIBEAM CATHODE RAY TUBE APPARATUS ABSTRACT The present invention relates to multibeam cathode ray tube apparatus. The preferred application of the invention is to colour balance control in a multibeam colour cathode ray tube, but it can also be used in a multibeam monochrome cathode ray tube. The background to the invention will be outlined in terms of colour tubes and the application to monochrome tubes will be clear from the preferred embodi- ment. UK9-79-012
356677
International Business Machines Corporation
Kerr Alexander
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