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经营范围
发明名称
Cement basket
摘要
申请公布号
US3358768(A)
申请公布日期
1967.12.19
申请号
US19660521872
申请日期
1966.01.20
申请人
B & W INCORPORATED
发明人
SOLUM JAMES R.
分类号
E21B33/136
主分类号
E21B33/136
代理机构
代理人
主权项
地址
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