FORMATION OF SQUARE STEEL TUBE,申请号JP19900407666-传众专利搜索

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发明名称	FORMATION OF SQUARE STEEL TUBE
摘要
申请公布号	JPH04224023(A)	申请公布日期	1992.08.13
申请号	JP19900407666	申请日期	1990.12.27
申请人	NIPPON STEEL CORP	发明人	YAMAMOTO YASUSHI;YAMAZAKI KAZUMASA
分类号	B21C37/15;B21D5/12	主分类号	B21C37/15
代理机构		代理人
主权项
地址

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