US PATENT SUBCLASS 166 / 336
.~ Testing

Current as of: June, 1999
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166 /   HD   WELLS

335  DF  SUBMERGED WELL {10}
336.~ Testing {1}
337  DF  .~.~> For leak

DEFINITION

Classification: 166/336

Testing:

(under subclass 335) Process, apparatus, or device including means for determining the characteristics of the well structure.