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发明名称
摘要
申请公布号
JPS559328(U)
申请公布日期
1980.01.22
申请号
JP19780091475U
申请日期
1978.07.04
申请人
发明人
分类号
B21C37/29;B21C37/08;B23K33/00;E04B1/38;E04B1/58;(IPC1-7):E04B1/40
主分类号
B21C37/29
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代理人
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