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公开(公告)号：US1927671A
公开(公告)日：1933-09-19
申请号：US57422331
申请日：1931-11-10
Applicant: GEN ELECTRIC
Inventor： YUICHIRO SHIRAISHI
IPC: C23F3/06
CPC classification number: C23F3/06
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公开(公告)号：US1854988A
公开(公告)日：1932-04-19
申请号：US32876228
申请日：1928-12-27
Applicant: GEN ELECTRIC
Inventor： KITSUZO FUWA , YUICHIRO SHIRAISHI
IPC: H01J5/08
CPC classification number: H01J5/08
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