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发明名称
CASING PATCH SEAL
摘要
申请公布号
GB8616233(D0)
申请公布日期
1986.08.13
申请号
GB19860016233
申请日期
1986.07.03
申请人
A-Z INTERNATIONAL TOOL CO
发明人
分类号
E21B29/10;E21B33/10;(IPC1-7):F16J15/02
主分类号
E21B29/10
代理机构
代理人
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