US PATENT SUBCLASS 166 / 124
.~.~.~ Screw threaded


Current as of: June, 1999
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166 /   HD   WELLS

179  DF  PACKERS OR PLUGS {17}
118  DF  .~ With expanding anchor {12}
123  DF  .~.~ With detachable setting means {2}
124.~.~.~ Screw threaded


DEFINITION

Classification: 166/124

(under subclass 123) Devices in which the connection comprises screw threads on the device engaging screw threads on the lowering means.