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发明名称
METHOD AND APPARATUS FOR PLUGGING AN END OF A TUBULAR PASSAGE
摘要
申请公布号
GB1218492(A)
申请公布日期
1971.01.06
申请号
GB19690032580
申请日期
1969.06.27
申请人
N.V. NERATOOM
发明人
分类号
B21D39/04;B21D39/06;F16L5/00;F22G3/00;F28F11/02
主分类号
B21D39/04
代理机构
代理人
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地址
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