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发明名称
Rheostat
摘要
申请公布号
US2446417(A)
申请公布日期
1948.08.03
申请号
US19460644877
申请日期
1946.02.01
申请人
HARDWICK, HINDLE, INC.
发明人
HASTINGS DONALD FRANCIS
分类号
H01C10/32
主分类号
H01C10/32
代理机构
代理人
主权项
地址
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