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发明名称
摘要
申请公布号
JPS5644022(Y2)
申请公布日期
1981.10.15
申请号
JP19730051733U
申请日期
1973.04.30
申请人
发明人
分类号
H01F37/00;F21V23/02;H01F29/00;(IPC1-7):H01F29/00
主分类号
H01F37/00
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