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发明名称
Rheostat
摘要
申请公布号
US2005516(A)
申请公布日期
1935.06.18
申请号
US19320606587
申请日期
1932.04.21
申请人
BERTRAM HENRY J
发明人
BERTRAM HENRY J.
分类号
H01C10/12
主分类号
H01C10/12
代理机构
代理人
主权项
地址
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