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发明名称
Blechblasinstrument mit Umschaltvorrichtung von F nach B
摘要
申请公布号
DE518837(C)
申请公布日期
1931.02.20
申请号
DED518837D
申请日期
1930.05.11
申请人
AUGUST DUMMUSCHEIT
发明人
分类号
G10D7/10
主分类号
G10D7/10
代理机构
代理人
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地址
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