US PATENT SUBCLASS 29 / 617
.~.~.~.~.~ By oxidation

Current as of: June, 1999
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29 /   HD   METAL WORKING

592  DF  METHOD OF MECHANICAL MANUFACTURE {54}
592.1  DF  .~ Electrical device making {14}
610.1  DF  .~.~ Resistor making {6}
613  DF  .~.~.~ With envelope or housing {4}
616  DF  .~.~.~.~ Powdering the insulation {1}
617.~.~.~.~.~ By oxidation

DEFINITION

Classification: 29/617

By oxidation:

(under subclass 616) Process wherein the embedding insulation is powdered in situ by oxidation, as by passing steam over a metal such as magnesium.