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公开(公告)号：US2227203A
公开(公告)日：1940-12-31
申请号：US23911438
申请日：1938-11-05
Applicant: SHARPLES CORP
Inventor： SCOTT ASHTON T , BROWN CHARLES R
IPC: C11D13/30
CPC classification number: C11D13/30
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