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发明名称
PRIMER CENTERING DEVICE FOR LARGE DIAMETER BLASTHOLES
摘要
申请公布号
AU616561(B2)
申请公布日期
1991.10.31
申请号
AU19890041247
申请日期
1989.09.11
申请人
SUNCOR, INC.
发明人
PATRICK D. MCLAUGHLIN
分类号
F42B3/185;F42D1/22;(IPC1-7):F42D1/00
主分类号
F42B3/185
代理机构
代理人
主权项
地址
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