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发明名称
Indicating device
摘要
申请公布号
US1929668(A)
申请公布日期
1933.10.10
申请号
US19320602698
申请日期
1932.04.02
申请人
RADIO CORPORATION
发明人
GOLDSBOROUGH THADDEUS R.
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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