ROOF SUPPORT ROOF BAR,申请号PL19790212652-传众专利搜索

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发明名称	ROOF SUPPORT ROOF BAR
摘要
申请公布号	PL121041(B1)	申请公布日期	1982.04.30
申请号	PL19790212652	申请日期	1979.01.05
申请人		发明人
分类号	E21D;E21D23/06;(IPC1-7):E21D23/06	主分类号	E21D
代理机构		代理人
主权项
地址

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