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发明名称
Cofferdam
摘要
申请公布号
US1951293(A)
申请公布日期
1934.03.13
申请号
US19290369560
申请日期
1929.06.10
申请人
CAHILL JAMES E
发明人
CAHILL JAMES E.
分类号
E02D19/04
主分类号
E02D19/04
代理机构
代理人
主权项
地址
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