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申请公布号
NL7206706(A)
申请公布日期
1972.11.21
申请号
NL19720006706
申请日期
1972.05.17
申请人
发明人
分类号
H03H19/00;(IPC1-7):H03H7/10
主分类号
H03H19/00
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