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经营范围
发明名称
RETAINING RING
摘要
申请公布号
PL314195(A1)
申请公布日期
1997.11.10
申请号
PL19960314195
申请日期
1996.05.09
申请人
WASYLECZKO ZENON
发明人
WASYLECZKO ZENON
分类号
E21C35/197;F16B21/18;(IPC1-7):E21C35/197
主分类号
E21C35/197
代理机构
代理人
主权项
地址
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