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公开(公告)号：US2304859A
公开(公告)日：1942-12-15
申请号：US31896240
申请日：1940-02-14
Applicant: GEN ELECTRIC
Inventor： STRICKLAND ROYAL F , MALLOY FRANK J , POVALL GERALD W
IPC: C23C14/56
CPC classification number: C23C14/56 , Y10S118/03
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