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发明名称
DISPLAY DEVICE FOR PRESENCE OF ELECTRONIC EXCHANGE
摘要
申请公布号
JPH03148947(A)
申请公布日期
1991.06.25
申请号
JP19890287009
申请日期
1989.11.02
申请人
MATSUSHITA ELECTRIC IND CO LTD
发明人
TODA MITSUHARU
分类号
H04M3/42
主分类号
H04M3/42
代理机构
代理人
主权项
地址
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