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发明名称
Measuring resistance of distant grounds from alpha central office
摘要
申请公布号
US1956538(A)
申请公布日期
1934.04.24
申请号
US19320643786
申请日期
1932.11.21
申请人
THE WESTERN UNION TELEGRAPH COMPANY
发明人
RIDINGS GARVICE H.;AGNEW EDWARD J.
分类号
G01R27/18
主分类号
G01R27/18
代理机构
代理人
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地址
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