US PATENT SUBCLASS 516 / DIG 2
.~ Organic and inorganic agents containing (except water) (252/352)


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516 /   HD   COLLOID SYSTEMS AND WETTING AGENTS; SUBCOMBINATIONS THEREOF; PROCESSES OF

DIG 1  DD  WETTING, EMULSIFYING, DISPERSING, OR STABILIZING AGENTS (252/351) {4}
DIG 2.~ Organic and inorganic agents containing (except water) (252/352)