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经营范围
发明名称
Concentric pipe insulator and spacer
摘要
申请公布号
US2551867(A)
申请公布日期
1951.05.08
申请号
US19470773885
申请日期
1947.09.13
申请人
THE TEXAS COMPANY
发明人
BOND DONALD H.
分类号
F16L7/00
主分类号
F16L7/00
代理机构
代理人
主权项
地址
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