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公开(公告)号：US2385435A
公开(公告)日：1945-09-25
申请号：US55994844
申请日：1944-10-23
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： WERNER LEO C , LANING WILLARD A
IPC: H01J1/18
CPC classification number: H01J1/18
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