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经营范围
发明名称
Dam gate
摘要
申请公布号
US2311666(A)
申请公布日期
1943.02.23
申请号
US19420430038
申请日期
1942.02.09
申请人
JOHN KALIX
发明人
KALIX JOHN
分类号
E02B7/26
主分类号
E02B7/26
代理机构
代理人
主权项
地址
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