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PCE
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DIFF Subgroup Additional Only
H01J 2231/12

CRTs having luminescent screens

Full Title

Cathode ray tubes or electron beam tubes (H01J2329/00 takes precedence) > CRTs having luminescent screens

Of 2 combined children, 0 exist in both systems.

2 codes are CPC-only extensions.

Note: 2 CPC extensions are marked as secondary classification only.