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经营范围
发明名称
Tapered spring reverberation delay line
摘要
申请公布号
GB1121135(A)
申请公布日期
1968.07.24
申请号
GB19650033019
申请日期
1965.08.02
申请人
D. H. BALDWIN COMPANY
发明人
分类号
G10K15/10
主分类号
G10K15/10
代理机构
代理人
主权项
地址
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