US PATENT SUBCLASS 422 / 930
.~ Drop counters or drop formers [B01L 3/02D]
Current as of:
June, 1999
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422 /
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CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING
919
DD
BURETTES; PIPETTES [B01L 3/02]
{5}
930
.~ Drop counters or drop formers [B01L 3/02D]
