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经营范围
发明名称
Voltage ratio recorder
摘要
申请公布号
US2420193(A)
申请公布日期
1947.05.06
申请号
US19430515509
申请日期
1943.12.24
申请人
GENERAL ELECTRIC COMPANY
发明人
RICH THEODORE A.
分类号
G05B23/02
主分类号
G05B23/02
代理机构
代理人
主权项
地址
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