CPC Subgroup
H05B 3/40 Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence)
Full Title
Ohmic-resistance heating > Heating elements having the shape of rods or tubes (H05B3/62, H05B3/68, H05B3/78 take precedence)
2 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open