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发明名称
Amplifying system
摘要
申请公布号
US2061602(A)
申请公布日期
1936.11.24
申请号
US19300458975
申请日期
1930.06.02
申请人
JOHN WALSH PHILIP
发明人
WALSH PHILIP JOHN
分类号
H03D1/16
主分类号
H03D1/16
代理机构
代理人
主权项
地址
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