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发明名称
摘要
申请公布号
JPS4915349(B1)
申请公布日期
1974.04.13
申请号
JP19690104157
申请日期
1969.12.24
申请人
发明人
分类号
B21B37/48;G05D5/02
主分类号
B21B37/48
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代理人
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地址
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