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发明名称
SYNCHRONOUS TELEGRAPHY
摘要
申请公布号
IE12271(L)
申请公布日期
1931.06.04
申请号
IED12271
申请日期
1930.11.27
申请人
ELECTRICAL RESEARCH PRODUCTS INC
发明人
分类号
H04L7/02;(IPC1-7):H04L7/02
主分类号
H04L7/02
代理机构
代理人
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