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公开(公告)号：US3002630A
公开(公告)日：1961-10-03
申请号：US3138660
申请日：1960-05-24
Applicant: HEISSER ROBERT E
Inventor： HEISSER ROBERT E
IPC: A47K1/09
CPC classification number: A47K1/09 , A47K2201/02
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