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公开(公告)号：US1477243A
公开(公告)日：1923-12-11
申请号：US60083922
申请日：1922-11-14
Applicant: REGINA CORP
Inventor： ROBERT COATES
IPC: A47L9/32
CPC classification number: A47L9/325 , Y10S15/10 , Y10T403/32352
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