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发明名称
摘要
申请公布号
JPH0349653(B2)
申请公布日期
1991.07.30
申请号
JP19850197852
申请日期
1985.09.09
申请人
JAPAN STEEL WORKS LTD
发明人
WATANABE YASUSHI;SATO SHUJI
分类号
B21J9/18;B30B1/28
主分类号
B21J9/18
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