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发明名称
Installation of underground transmission pipe
摘要
申请公布号
US2663323(A)
申请公布日期
1953.12.22
申请号
US19520269957
申请日期
1952.02.05
申请人
CLARENCE L. BALL;ROBERT L. MORGAN
发明人
THOMAS LAWRENCE E.
分类号
F16L59/15
主分类号
F16L59/15
代理机构
代理人
主权项
地址
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