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发明名称
Schalldose.
摘要
申请公布号
CH142504(A)
申请公布日期
1930.09.30
申请号
CHD142504
申请日期
1929.08.28
申请人
KATSCHER,SIGMUND
发明人
KATSCHER,SIGMUND
分类号
G11B3/04
主分类号
G11B3/04
代理机构
代理人
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地址
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