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经营范围
发明名称
Potentiometer
摘要
申请公布号
US2246884(A)
申请公布日期
1941.06.24
申请号
US19380231277
申请日期
1938.09.22
申请人
THE LEWIS ENGINEERING COMPANY
发明人
JOHNSON MANFRED J.
分类号
G01R17/02
主分类号
G01R17/02
代理机构
代理人
主权项
地址
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