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发明名称
CALL SYSTEM FOR TELEPHONE
摘要
申请公布号
JPH04225658(A)
申请公布日期
1992.08.14
申请号
JP19900407538
申请日期
1990.12.27
申请人
NEC COMMUN SYST LTD
发明人
MORI HIROSHI
分类号
H04M3/42
主分类号
H04M3/42
代理机构
代理人
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