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经营范围
发明名称
Flume and ditch lining
摘要
申请公布号
US2170671(A)
申请公布日期
1939.08.22
申请号
US19380214497
申请日期
1938.06.18
申请人
ROBERT ADLER
发明人
ADLER ROBERT
分类号
E02B13/00
主分类号
E02B13/00
代理机构
代理人
主权项
地址
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