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经营范围
发明名称
TRANSMISSION CIRCUIT FOR CALLOUT SIGNAL
摘要
申请公布号
JPS55104163(A)
申请公布日期
1980.08.09
申请号
JP19790010387
申请日期
1979.02.02
申请人
HITACHI LTD
发明人
ENAMI SHIROU
分类号
H04M3/02
主分类号
H04M3/02
代理机构
代理人
主权项
地址
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