METHOD OF MANUFACTURING BARS OF TRAPEZOIDAL CROSS-SECTION FOR FIRE-BARS,申请号PL19780205178-传众专利搜索

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发明名称	METHOD OF MANUFACTURING BARS OF TRAPEZOIDAL CROSS-SECTION FOR FIRE-BARS
摘要
申请公布号	PL122875(B1)	申请公布日期	1982.08.31
申请号	PL19780205178	申请日期	1978.03.07
申请人		发明人
分类号	B21B;B21B1/08;(IPC1-7):B21B1/08	主分类号	B21B
代理机构		代理人
主权项
地址

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