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公开(公告)号：US3155996A
公开(公告)日：1964-11-10
申请号：US24506262
申请日：1962-12-17
Applicant: CLEMENTS MFG CO
Inventor： BERTHELOT ARTHUR P , CLEMENTS WILLIAM J , JASON JOHN P
IPC: A47L11/40
CPC classification number: A47L11/4008 , A47L11/4075
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