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经营范围
发明名称
Staubhaube zum Absaugen von Gesteinsbohrstaub
摘要
申请公布号
DE630761(C)
申请公布日期
1936.06.05
申请号
DENDATF078239D
申请日期
申请人
FREIER GRUNDER EISEN- UND METALLWERKE G.M.B.H.
发明人
分类号
B23Q11/00;E21B21/015
主分类号
B23Q11/00
代理机构
代理人
主权项
地址
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