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公开(公告)号：US2936469A
公开(公告)日：1960-05-17
申请号：US59526356
申请日：1956-07-02
Applicant: EKLIND HOWARD A
Inventor： EKLIND HOWARD A
IPC: A47L1/09
CPC classification number: A47L1/09 , Y10T403/471 , Y10T403/59
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