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发明名称
摘要
申请公布号	JPH0781257(B2)	申请公布日期	1995.08.30
申请号	JP19900338562	申请日期	1990.11.30
申请人		发明人
分类号	E02B7/20;E02B7/44;(IPC1-7):E02B7/20	主分类号	E02B7/20
代理机构		代理人
主权项
地址

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