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发明名称
摘要
申请公布号	NL7213714(A)	申请公布日期	1973.04.17
申请号	NL19720013714	申请日期	1972.10.11
申请人		发明人
分类号	B04B3/00;(IPC1-7):B04B3/00	主分类号	B04B3/00
代理机构		代理人
主权项
地址

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