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公开(公告)号：US2919030A
公开(公告)日：1959-12-29
申请号：US56044056
申请日：1956-01-20
Applicant: BOWSER INC
Inventor： GRANT MICHAEL G , TOPOL GEORGE J
IPC: B01D17/04
CPC classification number: B01D17/045 , B01D17/10
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