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发明名称
Vacuum tube amplifier system
摘要
申请公布号
US1927628(A)
申请公布日期
1933.09.19
申请号
US19280255814
申请日期
1928.02.20
申请人
ROBERT T. MACK
发明人
EDELMAN PHILIP E.
分类号
H03J3/00;H04B1/18
主分类号
H03J3/00
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