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发明名称
Tiefbohren mit einem Spuelwasser
摘要
申请公布号
DE629755(C)
申请公布日期
1936.05.09
申请号
DE1934B165058D
申请日期
1934.04.12
申请人
WILHELM BETZ
发明人
分类号
C09K8/26
主分类号
C09K8/26
代理机构
代理人
主权项
地址
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