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公开(公告)号：US3533507A
公开(公告)日：1970-10-13
申请号：US3533507D
申请日：1968-06-11
Applicant: PATERSON CANDY INT
Inventor： AITKEN ROBERT WILLIAM
CPC classification number: B01D24/4636 , B01D24/22 , B01D2201/087
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