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发明名称
Head gate for irrigation ditches
摘要
申请公布号
US2415332(A)
申请公布日期
1947.02.04
申请号
US19450616636
申请日期
1945.09.15
申请人
BLACKMORE ROBERT B
发明人
BLACKMORE ROBERT B.
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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