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发明名称
Coupling device for radio purposes
摘要
申请公布号
US2244025(A)
申请公布日期
1941.06.03
申请号
US19380240306
申请日期
1938.11.14
申请人
JOHNSON LABORATORIES, INC.
发明人
SCHAPER WILLIAM A.
分类号
H03H7/01
主分类号
H03H7/01
代理机构
代理人
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地址
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