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发明名称
Improved sealing apparatus
摘要
申请公布号
GB2456259(B)
申请公布日期
2012.02.22
申请号
GB20090007390
申请日期
2007.11.02
申请人
RUBBERATKINS LIMITED
发明人
NICHOLAS ATKINS;TIMOTHY CLARKE
分类号
E21B33/12;E21B33/124;E21B33/126
主分类号
E21B33/12
代理机构
代理人
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地址
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