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发明名称
Gesteinsbohrkrone
摘要
申请公布号
DE919585(C)
申请公布日期
1954.10.28
申请号
DE1951H008206
申请日期
1951.04.17
申请人
AKTIENGESELLSCHAFT FUER UNTERNEHMUNGEN DER EISEN- UND STAHLINDUSTRIE;HERMANN HEMSCHEIDT
发明人
POENITSCH FRIEDHELM;KREY AUGUST
分类号
E21B10/38
主分类号
E21B10/38
代理机构
代理人
主权项
地址
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