US PATENT SUBCLASS 166 / 383
.~.~ By fluid driven piston

Current as of: June, 1999
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166 /   HD   WELLS

244.1  DF  PROCESSES {39}
381  DF  .~ Placing or shifting well part {6}
383.~.~ By fluid driven piston

DEFINITION

Classification: 166/383

By fluid driven piston:

(under subclass 381) Process wherein a translating member driven by fluid pressure is employed to put into place or move a well part.

SEE OR SEARCH THIS CLASS, SUBCLASS:

153+, for the piston apparatus, per se.