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发明名称
RECLAIMABLE REFUGE CHAMBER
摘要
申请公布号
ZA8804241(B)
申请公布日期
1989.03.29
申请号
ZA19880004241
申请日期
1988.06.14
申请人
BROSEAL VENTILATION (PROPRIETARY) LIMITED
发明人
CORNELIUS NICOLAAS SWART
分类号
E21F
主分类号
E21F
代理机构
代理人
主权项
地址
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