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公开(公告)号：US2500955A
公开(公告)日：1950-03-21
申请号：US5428448
申请日：1948-10-13
Applicant: P A GEIER CO
Inventor： MARTINET EUGENE F , CEDIK STANLEY J
IPC: A47L9/24
CPC classification number: A47L9/242
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