DIFF Subgroup
H01C 3/04 Iron-filament ballast resistors; Other resistors having variable temperature coefficient
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven, or formed as grids > Iron-filament ballast resistors; Other resistors having variable temperature coefficient
CPC:
Non-adjustable metal resistors made of wire or ribbon, e.g. coiled, woven or formed as grids > Iron-filament ballast resistors; Other resistors having variable temperature coefficient
No child classifications to compare. This is a leaf node in both IPC and CPC.