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DIFF Subgroup Additional Only
H01J 2329/943

Means for maintaining vacuum within the vessel

Full Title

Electron emission display panels, e.g. field emission display panels > Means for exhausting the vessel or maintaining vacuum within the vessel > Means for maintaining vacuum within the vessel

Of 1 combined children, 0 exist in both systems.

1 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.