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发明名称
Perfectionnements aux dispositifs pour l'irrigation souterraine
摘要
申请公布号
FR721286(A)
申请公布日期
1932.03.01
申请号
FRD721286
申请日期
1931.08.12
申请人
发明人
BERARD RENE
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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