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发明名称
AUDIO AMPLIFIER CIRCUIT USING VACUUM TUBE
摘要
申请公布号
JPH0492506(A)
申请公布日期
1992.03.25
申请号
JP19900210908
申请日期
1990.08.07
申请人
YAMADA KAZUTOSHI
发明人
YAMADA KAZUTOSHI
分类号
H03F3/02
主分类号
H03F3/02
代理机构
代理人
主权项
地址
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