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发明名称
PUBLIC TELEPHONE SYSTEM
摘要
申请公布号
JPH0447855(A)
申请公布日期
1992.02.18
申请号
JP19900156838
申请日期
1990.06.15
申请人
NEC CORP
发明人
YAMAMOTO KAZUTAKA
分类号
H04M1/00;H04M17/00
主分类号
H04M1/00
代理机构
代理人
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