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发明名称
摘要
申请公布号
NL6807513(A)
申请公布日期
1968.12.02
申请号
NL19680007513
申请日期
1968.05.28
申请人
发明人
分类号
H03G3/22;H03F5/00;H03G3/20;H04N9/68;(IPC1-7):H04N9/42
主分类号
H03G3/22
代理机构
代理人
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