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公开(公告)号：US2537225A
公开(公告)日：1951-01-09
申请号：US74304047
申请日：1947-04-22
Applicant: CONTINENTAL ELECTRIC COMPANY
Inventor： GERHARD LEWIN , BENES JR JOHN
IPC: H01J40/04
CPC classification number: H01J40/04
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