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发明名称
Preselector
摘要
申请公布号
US2281640(A)
申请公布日期
1942.05.05
申请号
US19380187176
申请日期
1938.01.27
申请人
OAK MANUFACTURING COMPANY
发明人
CATE ARTHUR C. TEN
分类号
H03J5/12
主分类号
H03J5/12
代理机构
代理人
主权项
地址
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