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发明名称
SECRECY SYSTEM IN TRUNK LINE SPEECH TRANSFER
摘要
申请公布号
JPH06232964(A)
申请公布日期
1994.08.19
申请号
JP19930013311
申请日期
1993.01.29
申请人
MEISEI ELECTRIC CO LTD
发明人
FUKUSHIMA JUNICHI
分类号
H04M1/70;(IPC1-7):H04M1/70
主分类号
H04M1/70
代理机构
代理人
主权项
地址
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