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1.发明授权
公开(公告)号：US2590493A
公开(公告)日：1952-03-25
申请号：US70675946
申请日：1946-10-30
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： BERBERICH LEO J , ANDERSON ORVILLE E
CPC classification number: C03C25/40 , H01B3/46 , Y10T428/31612 , Y10T442/2369 , Y10T442/2377
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