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公开(公告)号：US2662536A
公开(公告)日：1953-12-15
申请号：US32303252
申请日：1952-11-28
Applicant: GEN ELECTRIC
Inventor： MARTINIAK LEONARD J , DUSENBERRY JOHN W
CPC classification number: A47L15/06 , Y10T137/1135
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