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发明名称
MINERAL CUTTING DEVICE ETC.
摘要
申请公布号
ZA8503301(B)
申请公布日期
1986.03.26
申请号
ZA19850003301
申请日期
1985.05.02
申请人
MANNOVATION LIMITED
发明人
GEORGE ALBERT PARROTT;NEIL PREDDY
分类号
E21B;E21C;E21C35/18
主分类号
E21B
代理机构
代理人
主权项
地址
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