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经营范围
发明名称
PROTECTION UNIT
摘要
申请公布号
JPS5389645(A)
申请公布日期
1978.08.07
申请号
JP19770003968
申请日期
1977.01.19
申请人
HITACHI LTD
发明人
OOTA YOSHICHIYUU;SANBE TOORU
分类号
H03F1/52;H02H7/20;H03F1/00;H03F1/42;H03F3/20;H03F3/30
主分类号
H03F1/52
代理机构
代理人
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