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经营范围
发明名称
Pegelmessverfahren in Fernsprechleitungen
摘要
申请公布号
DE602239(C)
申请公布日期
1934.09.04
申请号
DED602239D
申请日期
1930.05.08
申请人
TELEFONAKTIEBOLAGET L. M. ERICSSON
发明人
分类号
H04M3/32
主分类号
H04M3/32
代理机构
代理人
主权项
地址
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