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

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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.