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发明名称
摘要
申请公布号
GB1302538(A)
申请公布日期
1973.01.10
申请号
GBD1302538
申请日期
1969.11.14
申请人
发明人
分类号
B23K20/12;(IPC1-7):B23K19/00
主分类号
B23K20/12
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代理人
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地址
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