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发明名称
Signal converter for communication systems
摘要
申请公布号
US2765371(A)
申请公布日期
1956.10.02
申请号
US19540470996
申请日期
1954.11.24
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
FRITSCHI WALTER W.;WEAVER ALLAN
分类号
H04Q1/446
主分类号
H04Q1/446
代理机构
代理人
主权项
地址
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