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发明名称
Line identification arrangements particularly for telephone systems
摘要
申请公布号
US2945916(A)
申请公布日期
1960.07.19
申请号
US19550549210
申请日期
1955.08.30
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
STOBBE HELMUT;GLAS ARTHUR;HEITMANN HERBERT
分类号
H04M15/08
主分类号
H04M15/08
代理机构
代理人
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地址
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