DIFF Subgroup
H05B 41/16 in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Circuit arrangements or apparatus for igniting or operating discharge lamps > Circuit arrangements > in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC
CPC:
Circuit arrangements or apparatus for igniting or operating discharge lamps (structurally associated with the discharge lamps H01J61/54, H01J61/56) > Circuit arrangements > in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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