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经营范围
发明名称
Combination sand pump and bailer
摘要
申请公布号
US1866828(A)
申请公布日期
1932.07.12
申请号
US19280287091
申请日期
1928.06.21
申请人
MILLER COMBINATION BAILER AND PUMP COMPANY
发明人
WEBBER DONALD E.
分类号
E21B27/00
主分类号
E21B27/00
代理机构
代理人
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地址
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