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PCE
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DIFF Subgroup
H01J 1/58

acting by discolouration, e.g. halide screen

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps > Screens on or from which an image or pattern is formed, picked-up, converted, or stored; Luminescent coatings on vessels > acting by discolouration, e.g. halide screen

CPC:

Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps (details of electron-optical or ion-optical arrangements H01J3/00) > Screens on or from which an image or pattern is formed, picked-up, converted, or stored; Luminescent coatings on vessels > acting by discolouration, e.g. halide screen

No child classifications to compare. This is a leaf node in both IPC and CPC.