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公开(公告)号：US2248670A
公开(公告)日：1941-07-08
申请号：US15467637
申请日：1937-07-20
Applicant: GEN ELECTRIC
Inventor： HANS-JOACHIM HELWIG , MAX MAETSCHKE
IPC: F21K5/08
CPC classification number: F21K5/02
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