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经营范围
发明名称
A powder transfer system
摘要
申请公布号
GB2260306(A)
申请公布日期
1993.04.14
申请号
GB19920021208
申请日期
1992.10.08
申请人
* OILTOOLS INTERNATIONAL B.V
发明人
DENNIS KEITH * HODDER
分类号
B65G53/22;B65G53/30;E21B41/00
主分类号
B65G53/22
代理机构
代理人
主权项
地址
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