US PATENT SUBCLASS 134 / 41
.~ Metal base work, acid treating

Current as of: June, 1999
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134 /   HD   CLEANING AND LIQUID CONTACT WITH SOLIDS

*  DD  PROCESSES {23}
41.~ Metal base work, acid treating

DEFINITION

Classification: 134/41

(under the class definition) Processes which include treating metallic base work with acids.

SEE OR SEARCH THIS CLASS, SUBCLASS:

3, for acid treatments of metal base work which treatment includes oxidation, reduction, or bleaching.

27, for acid treatments when the acid is neutralized or is used to neutralize another agent.

28, for acid treatments preceded or followed by another treatment.