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发明名称
Variable resistor
摘要
申请公布号
US2846553(A)
申请公布日期
1958.08.05
申请号
US19560612769
申请日期
1956.09.28
申请人
SYLVANIA ELECTRIC PRODUCTS INC.
发明人
BLACK JAMES F.
分类号
H01C10/26
主分类号
H01C10/26
代理机构
代理人
主权项
地址
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