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发明名称
Potentiometer
摘要
申请公布号
US2279815(A)
申请公布日期
1942.04.14
申请号
US19400365665
申请日期
1940.11.14
申请人
OAK MFG. CO.
发明人
DRESSEL HENRY M.
分类号
H04R21/02;H04R21/04
主分类号
H04R21/02
代理机构
代理人
主权项
地址
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