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PCE
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DIFF Subgroup
C21D 1/70

while heating or quenching

Introduced: September 1968

Full Title

General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering > Temporary coatings or embedding materials applied before or during heat treatment > while heating or quenching

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