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公开(公告)号：US3533747A
公开(公告)日：1970-10-13
申请号：US3533747D
申请日：1967-10-31
Applicant: UNIVERSAL OIL PROD CO
Inventor： SUTHERLAND ROBERT EUGENE , FENSKE ELLSWORTH R , PASIK LEONARD F , MCLAUGHLIN JAMES H
CPC classification number: G01N33/2829 , Y10T436/12 , Y10T436/214
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