US PATENT SUBCLASS 173 / 62
.~.~.~ With means providing for independent use of either fluid

Current as of: June, 1999
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173 /   HD   TOOL DRIVING OR IMPACTING

197  DF  WORK CLEANSING {10}
59  DF  .~ By motive fluid for drive motor or advance causing or controlling motor {7}
61  DF  .~.~ Additional cleansing fluid source {2}
62.~.~.~ With means providing for independent use of either fluid

DEFINITION

Classification: 173/62

(under subclass 61) Apparatus in which means are provided to selectively control the supply of both fluids, whereby either one of the fluids may be separately admitted to the work face.