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经营范围
发明名称
Pipe lining apparatus
摘要
申请公布号
US2935777(A)
申请公布日期
1960.05.10
申请号
US19570639348
申请日期
1957.02.11
申请人
PERKINS PIPE LININGS, INC.
发明人
PERKINS WARREN E.;PERKINS ALFRED J.;SZPAKOWSKI ROBERT J.
分类号
F16L55/1645
主分类号
F16L55/1645
代理机构
代理人
主权项
地址
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