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发明名称
Adjustment control and indicator
摘要
申请公布号
US1841941(A)
申请公布日期
1932.01.19
申请号
US19300473753
申请日期
1930.08.07
申请人
RADIO CORPORATION
发明人
ELLIOTT HAROLD F.
分类号
H03J1/12
主分类号
H03J1/12
代理机构
代理人
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