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发明名称
Double-arm device retaining the soil required moisture and one-arm device retaining the required soil moisture
摘要
申请公布号
PL388380(A3)
申请公布日期
2009.12.21
申请号
PL20090388380
申请日期
2009.06.22
申请人
JANIAK JERZY
发明人
JANIAK JERZY
分类号
E02B13/02
主分类号
E02B13/02
代理机构
代理人
主权项
地址
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