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发明名称
Multiway connection for signaling circuits
摘要
申请公布号
US1937641(A)
申请公布日期
1933.12.05
申请号
US19310561076
申请日期
1931.09.03
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY
发明人
CRISSON GEORGE
分类号
H04B3/16
主分类号
H04B3/16
代理机构
代理人
主权项
地址
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