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发明名称
Hartmetallbestueckte Bohrkrone mit Vorschneider und Erweiterungsschneidfluegeln
摘要
申请公布号
DE1016660(B)
申请公布日期
1957.10.03
申请号
DE1953M020053
申请日期
1953.09.11
申请人
DIPL.-BERGING. ALBRECHT GRAEFER;DIPL.-BERGING. HUGO NUESSE
发明人
GRAEFER DIPL.-BERGING. ALBRECHT;NUESSE DIPL.-BERGING. HUGO;PILGRIM ALFRED
分类号
E21B10/26
主分类号
E21B10/26
代理机构
代理人
主权项
地址
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