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经营范围
发明名称
Schalldose
摘要
申请公布号
DE498922(C)
申请公布日期
1930.05.28
申请号
DENDATE038254D
申请日期
申请人
MAX EISLER
发明人
分类号
G11B3/46
主分类号
G11B3/46
代理机构
代理人
主权项
地址
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