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经营范围
发明名称
Friction welding
摘要
申请公布号
GB0209048(D0)
申请公布日期
2002.05.29
申请号
GB20020009048
申请日期
2002.04.20
申请人
ROLLS-ROYCE PLC
发明人
分类号
B23K20/12;B23K20/14
主分类号
B23K20/12
代理机构
代理人
主权项
地址
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