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公开(公告)号：US2828246A
公开(公告)日：1958-03-25
申请号：US60110656
申请日：1956-07-31
Applicant: COMMERCIAL SOLVENTS CORP
Inventor： FREANEY THOMAS E , ALLEN LEO P
CPC classification number: Y10S435/839 , Y10S530/825
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