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发明名称
METHOD OF AND COMPOSITION FOR SEALING THE WALLS OF WELLS AND OTHER UNDERGROUND CAVITIES
摘要
申请公布号
CA492647(A)
申请公布日期
1953.05.05
申请号
CAD492647
申请日期
申请人
L. H. LINCOLN AND SON
发明人
RALPH H. TWINING
分类号
主分类号
代理机构
代理人
主权项
地址
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