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发明名称
Ventilation stopping
摘要
申请公布号
AU685378(B3)
申请公布日期
1998.01.15
申请号
AU19970016373
申请日期
1997.03.19
申请人
BARCLAY MOWLEM CONSTRUCTION LIMITED
发明人
BARRY JOHN STURGEON
分类号
E21F1/14;(IPC1-7):E21F5/14
主分类号
E21F1/14
代理机构
代理人
主权项
地址
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