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发明名称
PAKNING FOR BROENNHODE
摘要
申请公布号
NO914977(D0)
申请公布日期
1991.12.17
申请号
NO19910004977
申请日期
1991.12.17
申请人
FMC CORPORATION
发明人
SINGEETHAM, SHIVA PRASAD
分类号
E21B33/00;E21B33/043;(IPC1-7):E21B/
主分类号
E21B33/00
代理机构
代理人
主权项
地址
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