,申请号PL19720155105-传众专利搜索

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法人/股东/高管

发明名称
摘要
申请公布号	PL82278(B1)	申请公布日期	1975.10.31
申请号	PL19720155105	申请日期	1972.05.02
申请人		发明人
分类号	E21D11/15;(IPC1-7):E21D23/12	主分类号	E21D11/15
代理机构		代理人
主权项
地址

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