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发明名称
Structure for lining tubular members
摘要
申请公布号
US2938562(A)
申请公布日期
1960.05.31
申请号
US19570704979
申请日期
1957.12.24
申请人
GRAY TOOL COMPANY
发明人
WATTS JOHN D.;PIERCE ELWOOD K.
分类号
B21C37/15;B21D26/02;F16L15/00
主分类号
B21C37/15
代理机构
代理人
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地址
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