US PATENT SUBCLASS 137 / 371
.~.~.~.~ Covers

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}
371.~.~.~.~ Covers

DEFINITION

Classification: 137/371

(under subclass 364) Devices comprising closures for the upper ends of the valve or meter wells.

SEE OR SEARCH THIS CLASS, SUBCLASS:

295, and 296, for hydrant casings flush with ground and/or covers or caps for hydrants.

800, for closures in fluid handling devices, and see the search notes thereto.

SEE OR SEARCH CLASS

220, Receptacles,

200+, for receptacle closures of general application.