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公开(公告)号：US2152994A
公开(公告)日：1939-04-04
申请号：US13264037
申请日：1937-03-23
Applicant: GEN ELECTRIC
Inventor： WALTER HANLEIN , HAGEN BERLIN WILHELM , HERMANN KREFFT
CPC classification number: H01J61/302 , C03C3/06 , C03C3/083 , C03C3/085 , C03C3/087 , C03C2201/32 , C03C2201/54 , C03C2203/10 , Y10S501/905
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