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IPC Subgroup
H01J 37/305

for casting, melting, evaporating, or etching

Introduced: July 1974

Last revised: January 2006

Full Title

Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof > Electron-beam or ion-beam tubes for localised treatment of objects > for casting, melting, evaporating, or etching

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC ELEMENTS
Subclass:
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS