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经营范围
发明名称
Automatic blocking of lines
摘要
申请公布号
US2913529(A)
申请公布日期
1959.11.17
申请号
US19530396592
申请日期
1953.12.07
申请人
TELEFONAKTIEBOLAGET L M ERICSSON
发明人
JACOBAEUS ANTON CHRISTIAN;BERGE ARTHUR
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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