US PATENT SUBCLASS 166 / 208
.~ Liner hanger

Current as of: June, 1999
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166 /   HD   WELLS

206  DF  EXPANSIBLE ANCHOR OR CASING {8}
208.~ Liner hanger

DEFINITION

Classification: 166/208

(under subclass 206) Devices specifically disclosed for anchoring a liner to the surrounding well conduit against movement up or down or both.