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公开(公告)号：US3538896A
公开(公告)日：1970-11-10
申请号：US3538896D
申请日：1969-03-25
Applicant: CALGON C0RP
Inventor： TOBIAS GEORGE S , COOPER JONATHAN C , STONEBURNER GEORGE R
CPC classification number: F02M25/08
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