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发明名称
APPARATUS FOR WELDING PLATE GIRDER BEAMS
摘要
申请公布号
PL112765(B1)
申请公布日期
1980.10.31
申请号
PL19770201698
申请日期
1977.10.22
申请人
发明人
分类号
B23K;B23K37/04;(IPC1-7):B23K37/04
主分类号
B23K
代理机构
代理人
主权项
地址
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