US PATENT SUBCLASS 507 / 277
.~.~ Inorganic component is soluble in the well treating medium

Current as of: June, 1999
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507 /   HD   EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY

200  DF  WELL TREATING {4}
269  DF  .~ Contains inorganic component other than water or clay {8}
277.~.~ Inorganic component is soluble in the well treating medium

DEFINITION

Classification: 507/277

Inorganic component is soluble in the well treating medium:

(under subclass 269) Compositions wherein the inorganic component is soluble in the well treating medium.

SEE OR SEARCH THIS CLASS, SUBCLASS:

901, and 902-907, and 920-940, for Art Collections pertaining to subclasses 200- 277.

CROSS-REFERENCE ART COLLECTIONS

CROSS-REFERENCE ART COLLECTIONS 901 - 907 RELATE TO SUBCLASSES 90 - 277. CROSS-REFERENCE ART COLLECTION 910 RELATES TO SUBCLASSES 100 - 145. CROSS-REFERENCE ART COLLECTIONS 920 - 940 RELATE TO SUBCLASSES 200 - 277.