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经营范围
发明名称
Rheostat for an electrical battery indicator
摘要
申请公布号
US2125219(A)
申请公布日期
1938.07.26
申请号
US19360111551
申请日期
1936.11.18
申请人
CAMPBELL BRUCE H
发明人
CAMPBELL BRUCE H.
分类号
G01N9/18
主分类号
G01N9/18
代理机构
代理人
主权项
地址
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