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经营范围
发明名称
WATER BARRIER FORMED FROM A CLAY-FIBER MAT
摘要
申请公布号
US5237945(A)
申请公布日期
1993.08.24
申请号
US19910677005
申请日期
1991.04.02
申请人
AMERICAN COLLOID COMPANY
发明人
WHITE, ALEC W.
分类号
E02D3/00;B09B1/00;B32B5/02;B32B5/16;E02B3/12;E02D31/00
主分类号
E02D3/00
代理机构
代理人
主权项
地址
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