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公开(公告)号：US1852840A
公开(公告)日：1932-04-05
申请号：US22323727
申请日：1927-09-30
Applicant: GEN ELECTRIC
Inventor： KITSUZO FUWA , TOSHIZO OKUGAWA
IPC: C03B29/02
CPC classification number: C03B29/02
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