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经营范围
发明名称
Dumping bailer
摘要
申请公布号
US1959660(A)
申请公布日期
1934.05.22
申请号
US19330698665
申请日期
1933.11.18
申请人
EDGECOMB CLARK R
发明人
EDGECOMB CLARK R.
分类号
E21B27/02
主分类号
E21B27/02
代理机构
代理人
主权项
地址
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