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发明名称
Verbeteringen aan automatische telefoonsystemen
摘要
申请公布号
BE591736(A5)
申请公布日期
1960.12.12
申请号
BE19600591736
申请日期
1960.06.10
申请人
BELL TELEPHONE MANUFACTURING COMPANY, NAAMLOZE VENNOOTSCHAP
发明人
M. DEN HERTOG;F. CLEMENS;R. DE GRAEVE
分类号
(IPC1-7):H04M
主分类号
(IPC1-7):H04M
代理机构
代理人
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地址
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