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发明名称
Tuning indicator
摘要
申请公布号
US1955085(A)
申请公布日期
1934.04.17
申请号
US19310562484
申请日期
1931.09.12
申请人
RADIO CORPORATION
发明人
OSBORN ALDEN EMERSON
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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