Patent classifications
H
ELECTRICITY
Load children
H01
ELECTRIC ELEMENTS
Load children
H01J
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
Load children
7/00
Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
Load children Filter patents View analytics View as hierarchy
H01J7/24
Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
Load children Filter patents View analytics View as hierarchy