US PATENT SUBCLASS 166 / 77.2
.~.~ Coiled tubing

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

75.11  DF  ABOVE GROUND APPARATUS {25}
77.1  DF  .~ Moving tubing or cable into an existing well {2}
77.2.~.~ Coiled tubing {1}
77.3  DF  .~.~.~> Chain injector

DEFINITION

Classification: 166/77.2

Coiled tubing:

(under subclass 77.1) Moved tubing wherein the thin-walled

pipe is wound on a reel.

SEE OR SEARCH CLASS

226, Advancing Material of Indeterminate Length,

162+, for feeding material by moving a grip element engaging the material.