US PATENT SUBCLASS 175 / 46
.~ Signaling or indicating condition of cutting in cuttings retainer


Current as of: June, 1999
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175 /   HD   BORING OR PENETRATING THE EARTH

40  DF  WITH SIGNALING, INDICATING, TESTING OR MEASURING {8}
46.~ Signaling or indicating condition of cutting in cuttings retainer


DEFINITION

Classification: 175/46

(under subclass 40) Process or apparatus comprising a cuttings retainer and a step or means for indicating a condition of cuttings within or entering said cuttings retainer.