US PATENT SUBCLASS 516 / DIG 7
.~ Organic amine, amide, or N-base containing (252/357)
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June, 1999
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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 7
.~ Organic amine, amide, or N-base containing (252/357)
