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发明名称
Improvements in arrangements for disconnecting false calls in automatic telephone systems
摘要
申请公布号
GB634076(A)
申请公布日期
1950.03.15
申请号
GB19450028102
申请日期
1945.10.24
申请人
TELEFONAKTIEBOLAGET L. M. ERICSSON
发明人
分类号
H04Q3/00
主分类号
H04Q3/00
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