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发明名称
Means for and method of amplifying electric impulses
摘要
申请公布号
US1788553(A)
申请公布日期
1931.01.13
申请号
US19270199649
申请日期
1927.06.18
申请人
THOMAS ADOLPH A
发明人
THOMAS ADOLPH A.
分类号
H01J40/16
主分类号
H01J40/16
代理机构
代理人
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地址
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