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发明名称
VALVE PLUGS
摘要
申请公布号
ZA9009518(B)
申请公布日期
1991.09.25
申请号
ZA19900009518
申请日期
1990.11.27
申请人
BOART INTERNATIONAL LIMITED
发明人
JOHN GILMOUR GLASSFORD;RAYMOND JOE HOSKING
分类号
F16K
主分类号
F16K
代理机构
代理人
主权项
地址
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