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发明名称
Improvements in the working of mineral or mineral-like bodies
摘要
申请公布号
GB550683(A)
申请公布日期
1943.01.20
申请号
GB19400006904
申请日期
1940.04.17
申请人
THE LINDE AIR PRODUCTS COMPANY
发明人
分类号
E21B7/14
主分类号
E21B7/14
代理机构
代理人
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