US PATENT SUBCLASS 166 / 73
.~.~ Tubing or casing actuated

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

67  DF  WITH BELOW AND ABOVE GROUND MODIFICATION {6}
72  DF  .~ Above ground actuating means for below ground device {1}
73.~.~ Tubing or casing actuated

DEFINITION

Classification: 166/73

(under subclass 72) Devices comprising a tubing or casing which is moved by the actuating means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

71, for above ground casing sinking means.