US PATENT SUBCLASS 55 / 385.5
.~ Involving mining or metallurgical apparatus

Current as of: June, 1999
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55 /   HD   GAS SEPARATION

385.1  DF  COMBINED OR CONVERTIBLE {7}
385.5.~ Involving mining or metallurgical apparatus

DEFINITION

Classification: 55/385.5

Involving mining or metallurgical apparatus:

(under subclass 385.1) Apparatus associated with mining or metallurgical structure.