DIFF Subgroup
H05B 3/64 using ribbon, rod, or wire heater
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Ohmic-resistance heating > Heating elements specially adapted for furnaces > using ribbon, rod, or wire heater
CPC:
Ohmic-resistance heating > Heating elements specially adapted for furnaces (H05B3/60 takes precedence; arrangements of elements for electric heating in or on furnaces using ohmic resistance heating F27D11/02) > using ribbon, rod, or wire heater
No child classifications to compare. This is a leaf node in both IPC and CPC.