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发明名称
Drain-tile band
摘要
申请公布号
US1747501(A)
申请公布日期
1930.02.18
申请号
US19270216880
申请日期
1927.09.01
申请人
BUTLER GLENN F;HAMAN CHARLES L
发明人
BUTLER GLENN F.;HAMAN CHARLES L.
分类号
E02B11/00
主分类号
E02B11/00
代理机构
代理人
主权项
地址
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