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公开(公告)号：US3473659A
公开(公告)日：1969-10-21
申请号：US3473659D
申请日：1967-09-25
Applicant: FMC CORP
Inventor： BERTICEVICH EDWARD N , BILLETT RONALD J
CPC classification number: B07B13/00 , Y10S209/931
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