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发明名称
TIME DISPLAY SYSTEM IN TELEPHONE CONVERSATION TIME DISPLAY DEVICE
摘要
申请公布号
JPS5423575(A)
申请公布日期
1979.02.22
申请号
JP19770088600
申请日期
1977.07.23
申请人
TAKACHIHO TSUSHINKIKI
发明人
ITOU KUNIO
分类号
H04M15/30;G04F3/00;G04F3/06;G04F10/00;G04F10/04;H04M15/00
主分类号
H04M15/30
代理机构
代理人
主权项
地址
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