Insulating layer or body located between heater and emissive material

Full Title

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 > Main electrodes > Solid thermionic cathodes > Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment > Insulating layer or body located between heater and emissive material

Classification Context

Section:

ELECTRICITY

Class:

ELECTRIC ELEMENTS

Subclass:

ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS