DIFF Subgroup
H05B 3/12 characterised by the composition or nature of the conductive material
Introduced: September 1968
Full Title
Ohmic-resistance heating > Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor > characterised by the composition or nature of the conductive material
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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