US PATENT SUBCLASS 137 / 370
.~.~.~.~ Telescopic well casing

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

343  DF  WITH CASING, SUPPORT, PROTECTOR OR STATIC CONSTRUCTIONAL INSTALLATIONS {7}
356  DF  .~ Static constructional installations {3}
363  DF  .~.~ Ground supporting enclosure {2}
364  DF  .~.~.~ Valve and meter wells {4}
370.~.~.~.~ Telescopic well casing

DEFINITION

Classification: 137/370

(under subclass 364) Valve wells in which the vertical column is divided into movable sections slidable one within the other, which sections may be locked together to fix the height of the casing.

SEE OR SEARCH THIS CLASS, SUBCLASS:

277, for a rotatable water crane having a vertically movable riser.

369, for telescoping casing combined with valve actuator.

SEE OR SEARCH CLASS

220, Receptacles, 3.92, 3.94, and 4.01+ for sectional and telescoping containers of general application.