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发明名称
Indicator apparatus
摘要
申请公布号
US1854608(A)
申请公布日期
1932.04.19
申请号
US19270221563
申请日期
1927.09.23
申请人
NATIONAL ELECTRICAL SUPPLY COMPANY
发明人
BURGER CLARENCE W.
分类号
H03J1/08
主分类号
H03J1/08
代理机构
代理人
主权项
地址
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