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发明名称
Spreizbock fuer Grubenstempel
摘要
申请公布号
DE738242(C)
申请公布日期
1943.08.06
申请号
DE1941M150722D
申请日期
1941.05.01
申请人
EDMUND MUEHLFELD
发明人
MUEHLFELD EDMUND
分类号
E21D15/52
主分类号
E21D15/52
代理机构
代理人
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