DIFF Subgroup
H01J 61/98 Lamps with closely spaced electrodes heated to incandescence by light-emitting discharge, e.g. tungsten arc lamp
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Gas-discharge or vapour-discharge lamps > Lamps with closely spaced electrodes heated to incandescence by light-emitting discharge, e.g. tungsten arc lamp
CPC:
Gas-discharge or vapour-discharge lamps (arc lamps with consumable electrodes H05B; electroluminescent lamps H05B) > Lamps with closely spaced electrodes heated to incandescence by light-emitting discharge, e.g. tungsten arc lamp
No child classifications to compare. This is a leaf node in both IPC and CPC.