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发明名称
Anordnung von Spülkanälen in Bohrkronen
摘要
申请公布号
AT184141(B)
申请公布日期
1955.12.27
申请号
ATD184141
申请日期
1954.08.25
申请人
GEBR. BOEHLER & CO. AKTIENGESELLSCHAFT
发明人
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