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经营范围
发明名称
PULSE WIDTH CONTROL SYSTEM
摘要
申请公布号
JPS6474067(A)
申请公布日期
1989.03.20
申请号
JP19870231624
申请日期
1987.09.14
申请人
NEC CORP
发明人
KOMI SUMIO
分类号
H02M7/48
主分类号
H02M7/48
代理机构
代理人
主权项
地址
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