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发明名称
Electrical measuring instrument
摘要
申请公布号
US1755009(A)
申请公布日期
1930.04.15
申请号
US19270190948
申请日期
1927.05.12
申请人
NALDER BROTHERS & THOMPSON LIMITED
发明人
LIPMAN CHMOUL LEIB
分类号
G01R5/20
主分类号
G01R5/20
代理机构
代理人
主权项
地址
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