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发明名称
摘要
申请公布号	JPS481829(U)	申请公布日期	1973.01.11
申请号	JP19710041953U	申请日期	1971.05.21
申请人		发明人
分类号	E01C23/16;E01C23/20;E01C23/24;(IPC1-7):E01C23/16	主分类号	E01C23/16
代理机构		代理人
主权项
地址

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