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发明名称
SWITCHING SYSTEM FOR TRUNK LINE CALL RESTRICTION CLASS
摘要
申请公布号
JPH0391350(A)
申请公布日期
1991.04.16
申请号
JP19890227504
申请日期
1989.09.04
申请人
OKI ELECTRIC IND CO LTD
发明人
TSUTSUI KATSUAKI;WATANABE MASAAKI
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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