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发明名称
IMPROVEMENTS IN OR RELATING TO THE MINING OR BREAKING DOWN OF ROCK AND LIKE MATERIALS
摘要
申请公布号
ZA7003596(B)
申请公布日期
1971.01.27
申请号
ZA19700003596
申请日期
1970.05.27
申请人
PARK W & CO FORGEMASTERS LTD
发明人
WALSH D
分类号
B28D1/28;E21C25/02
主分类号
B28D1/28
代理机构
代理人
主权项
地址
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