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公开(公告)号：US1791423A
公开(公告)日：1931-02-03
申请号：US37068028
申请日：1928-06-13
Applicant: REGINA CORP
Inventor： GEORGE MEIER
IPC: A47L9/32
CPC classification number: A47L9/325 , Y10S15/10 , Y10T403/32352
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