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公开(公告)号：US2881121A
公开(公告)日：1959-04-07
申请号：US64592257
申请日：1957-03-14
Applicant: HANSON VAN WINKLE MUNNING CO
Inventor： FOULKE DONALD G , OTTO KARDOS , HERMAN KORETZKY
IPC: C25D3/40
CPC classification number: C25D3/40
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