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发明名称
Pipe-line tool
摘要
申请公布号
US2263774(A)
申请公布日期
1941.11.25
申请号
US19390253160
申请日期
1939.01.27
申请人
STANOLIND PIPE LINE COMPANY
发明人
HELTZEL WILLIAM GILLUM;HILL ARTHUR MILLER
分类号
B08B9/04;B08B9/057
主分类号
B08B9/04
代理机构
代理人
主权项
地址
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