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发明名称
Transmission regulator system
摘要
申请公布号
US1849141(A)
申请公布日期
1932.03.15
申请号
US19300435000
申请日期
1930.03.11
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
DUTTON THOMAS D.
分类号
H04B3/11
主分类号
H04B3/11
代理机构
代理人
主权项
地址
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