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发明名称
Radio dial
摘要
申请公布号
US2155101(A)
申请公布日期
1939.04.18
申请号
US19370157262
申请日期
1937.08.04
申请人
ELECTRICAL RESEARCH LABORATORIES, INC.
发明人
SCHNELL WILLIAM J.
分类号
H03J1/04
主分类号
H03J1/04
代理机构
代理人
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