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发明名称
BUTTON ASSEMBLY FOR ROTARY ROCK CUTTERS
摘要
申请公布号
ZA8000997(B)
申请公布日期
1980.05.28
申请号
ZA19800000997
申请日期
1980.02.21
申请人
SUBTERRANEAN SA PTY LTD
发明人
BUSBY D
分类号
E21B;E21C
主分类号
E21B
代理机构
代理人
主权项
地址
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