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公开(公告)号：US2763818A
公开(公告)日：1956-09-18
申请号：US46233954
申请日：1954-10-14
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： BECK EDWARD F W , OPSAHL ALBERT M
IPC: H01T1/16
CPC classification number: H01T1/16
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