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发明名称
CONSTANT VOLTAGE SUPPLYING CIRCUIT FOR TELEPHONE
摘要
申请公布号
KR1019880000082(B1)
申请公布日期
1988.02.22
申请号
KR1019850006803
申请日期
1985.09.18
申请人
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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