US PATENT SUBCLASS 507 / 932
.~ Cleaning sulfur deposits

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

927  DF  WELL CLEANING FLUID {3}
932.~ Cleaning sulfur deposits

DEFINITION

Classification: 507/932

Cleaning sulfur deposits:

Subject matter under art collection 927 wherein the well cleaning fluid is for cleaning a sulfur deposit from the well.