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发明名称
PRIVATE BRANCH TELEPHONE SYSTEM
摘要
申请公布号
JPH04170142(A)
申请公布日期
1992.06.17
申请号
JP19900272875
申请日期
1990.10.11
申请人
MITSUBISHI ELECTRIC CORP
发明人
NAKAWATARI YASUSHI;NAGAI SATOSHI;YOSHIDA MASARU
分类号
H04M3/54
主分类号
H04M3/54
代理机构
代理人
主权项
地址
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