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发明名称
SPIRAL-SAATLEITUNGSROHR FUER DRILLMASCHINEN.
摘要
申请公布号
DE1616718(U)
申请公布日期
1950.11.30
申请号
DE195000B2752U
申请日期
1950.08.16
申请人
BERGBAU- UND HUETTEN- A.-G. "FRIEDRICHSHUETTE"
发明人
分类号
主分类号
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