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经营范围
发明名称
Wooden culvert
摘要
申请公布号
US2312653(A)
申请公布日期
1943.03.02
申请号
US19420447074
申请日期
1942.06.15
申请人
KUPHAL HENRY E
发明人
KUPHAL HENRY E.
分类号
F16L9/01
主分类号
F16L9/01
代理机构
代理人
主权项
地址
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