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发明名称
Delay device for use in transmission of oscillations
摘要
申请公布号
US2263902(A)
申请公布日期
1941.11.25
申请号
US19390254171
申请日期
1939.02.02
申请人
ELECTRIC & MUSICAL INDUSTRIES LIMITED
发明人
PERCIVAL WILLIAM SPENCER
分类号
H03H9/36
主分类号
H03H9/36
代理机构
代理人
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