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发明名称
Intercommunicating system
摘要
申请公布号
US1962298(A)
申请公布日期
1934.06.12
申请号
US19240727316
申请日期
1924.07.21
申请人
TELETYPE CORPORATION
发明人
CARROLL HOWARD K.
分类号
H04L12/04
主分类号
H04L12/04
代理机构
代理人
主权项
地址
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