INTER-SPAN STRUCTURE,申请号PL19780207869-传众专利搜索

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发明名称	INTER-SPAN STRUCTURE
摘要
申请公布号	PL109875(B2)	申请公布日期	1980.06.30
申请号	PL19780207869	申请日期	1978.06.22
申请人		发明人
分类号	E01D;E01D19/06;(IPC1-7):E01D19/06	主分类号	E01D
代理机构		代理人
主权项
地址

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