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经营范围
发明名称
Periodic-wave generator
摘要
申请公布号
GB690968(A)
申请公布日期
1953.04.29
申请号
GB19510008673
申请日期
1951.04.13
申请人
HAZELTINE CORPORATION
发明人
分类号
H03K4/28;H04N3/18
主分类号
H03K4/28
代理机构
代理人
主权项
地址
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