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发明名称
Control circuits for space discharge devices
摘要
申请公布号
US1893031(A)
申请公布日期
1933.01.03
申请号
US19300443696
申请日期
1930.04.12
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
LLEWELLYN FREDERICK B.
分类号
H03C1/00
主分类号
H03C1/00
代理机构
代理人
主权项
地址
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