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发明名称
Kleinklavier
摘要
申请公布号
DE847677(C)
申请公布日期
1952.08.25
申请号
DE1949P037369D
申请日期
1949.03.22
申请人
TRAUTWEIN FRIEDRICH DR.-ING.
发明人
TRAUTWEIN FRIEDRICH DR.-ING.
分类号
G10H3/20
主分类号
G10H3/20
代理机构
代理人
主权项
地址
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