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经营范围
发明名称
DUST CONTROLLING CYCLONE
摘要
申请公布号
ZA7604752(B)
申请公布日期
1977.07.27
申请号
ZA19760004752
申请日期
1976.08.06
申请人
CLARK B
发明人
CLARK B
分类号
E21C;E21F
主分类号
E21C
代理机构
代理人
主权项
地址
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