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发明名称
摘要
申请公布号
DD115599(A1)
申请公布日期
1975.10.12
申请号
DD19740182518
申请日期
1974.11.22
申请人
发明人
分类号
B23K31/00;(IPC1-7):B23K31/00
主分类号
B23K31/00
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代理人
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