CPC Subgroup Additional Only
H01J 2229/87 Means for avoiding vessel implosion
Full Title
Details of cathode ray tubes or electron beam tubes (H01J2329/00 takes precedence) > Means for avoiding vessel implosion
1 direct subcode
Child Classifications
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- H01J 2229/875 Means substantially covering the output face, e.g. resin layers, protective panels