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发明名称
Flushing passageway closures with reverse pressure rupturable portion
摘要
申请公布号
US3189107(A)
申请公布日期
1965.06.15
申请号
US19610148559
申请日期
1961.10.30
申请人
HUGHES TOOL COMPANY
发明人
GALLE EDWARD M.
分类号
E21B21/10
主分类号
E21B21/10
代理机构
代理人
主权项
地址
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