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发明名称
Einrichtung zur Tonverstärkung an einem Saiteninstrument.
摘要
申请公布号
CH239550(A)
申请公布日期
1945.10.31
申请号
CHD239550
申请日期
1945.03.05
申请人
WIEDERKEHR,HARRY AUGUST
发明人
AUGUST WIEDERKEHR,HARRY
分类号
G10H3/18
主分类号
G10H3/18
代理机构
代理人
主权项
地址
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