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发明名称
Visual indicator for tuning means
摘要
申请公布号
US2116217(A)
申请公布日期
1938.05.03
申请号
US19350041203
申请日期
1935.09.19
申请人
TELEFUNKEN GESELLSCHAFT FUR DRAHTLOSE TELEGRAPHIE M.B.H.
发明人
SCHWARZ KARL
分类号
H03J1/04
主分类号
H03J1/04
代理机构
代理人
主权项
地址
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