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发明名称
Switching system
摘要
申请公布号
US2393645(A)
申请公布日期
1946.01.29
申请号
US19430507802
申请日期
1943.10.27
申请人
MAKI GEORGE J
发明人
MAKI GEORGE J.
分类号
H04L27/12
主分类号
H04L27/12
代理机构
代理人
主权项
地址
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