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经营范围
发明名称
TELEPHONE EXCHANGE
摘要
申请公布号
JPS6441553(A)
申请公布日期
1989.02.13
申请号
JP19870198923
申请日期
1987.08.07
申请人
TOSHIBA CORP
发明人
KATO YASUHIRO
分类号
H04M3/42
主分类号
H04M3/42
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