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经营范围
发明名称
GRAVE-STRAALEANORDNING.
摘要
申请公布号
NO863157(A)
申请公布日期
1988.02.09
申请号
NO19860003157
申请日期
1986.08.05
申请人
WHALING, MICHAEL H.
发明人
WHALING, MICHAEL H.
分类号
E21C;(IPC1-7):E21C/
主分类号
E21C
代理机构
代理人
主权项
地址
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