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DIFF Subgroup
H01M 4/57

of "grey lead", i.e. powders containing lead and lead oxide

Introduced: July 1974

Full Title

Electrodes > Electrodes composed of, or comprising, active material > Selection of substances as active materials, active masses, active liquids > of inorganic oxides or hydroxides > of lead > of "grey lead", i.e. powders containing lead and lead oxide

No child classifications to compare. This is a leaf node in both IPC and CPC.