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经营范围
发明名称
Subdrain pipe
摘要
申请公布号
US2259335(A)
申请公布日期
1941.10.14
申请号
US19390287504
申请日期
1939.07.31
申请人
CARSWELL FIRMAN L;SCHMIDT OTTO W
发明人
CARSWELL FIRMAN L.;SCHMIDT OTTO W.
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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