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经营范围
发明名称
VENTILATION PLATE FOR SANITIZING OR PLANTING TREES
摘要
申请公布号
EP0141772(B1)
申请公布日期
1990.11.07
申请号
EP19840730122
申请日期
1984.11.09
申请人
VLG BERN
发明人
DUNKEL, VOLKER
分类号
E01C9/00
主分类号
E01C9/00
代理机构
代理人
主权项
地址
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