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经营范围
发明名称
Telegraph apparatus
摘要
申请公布号
US2250143(A)
申请公布日期
1941.07.22
申请号
US19390279951
申请日期
1939.06.19
申请人
CABLE AND WIRELESS LIMITED
发明人
WARBURTON FRED
分类号
H04L25/42
主分类号
H04L25/42
代理机构
代理人
主权项
地址
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