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1.发明授权
公开(公告)号：US2779255A
公开(公告)日：1957-01-29
申请号：US38107353
申请日：1953-09-18
Applicant: ELECTROLUX CORP
Inventor： CLARK MURRAY P , EMIL ANDERSON
IPC: B31B41/00
CPC classification number: B31B70/00 , B31B2160/10 , B31B2241/008 , Y10S55/05 , Y10S493/962
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