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发明名称
Transmission network
摘要
申请公布号
US1969571(A)
申请公布日期
1934.08.07
申请号
US19330661268
申请日期
1933.03.17
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
MASON WARREN P.
分类号
H03H9/00;H03H9/54
主分类号
H03H9/00
代理机构
代理人
主权项
地址
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