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发明名称
Flume
摘要
申请公布号
US1878289(A)
申请公布日期
1932.09.20
申请号
US19320608395
申请日期
1932.04.30
申请人
CALIFORNIA CORRUGATED CULVERT CO.
发明人
NORTON ALBERT COLWELL
分类号
E02B13/00
主分类号
E02B13/00
代理机构
代理人
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