Improvements in spacing devices for concrete pipes,申请号GB19630006364-传众专利搜索

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发明名称	Improvements in spacing devices for concrete pipes
摘要
申请公布号	GB997121(A)	申请公布日期	1965.06.30
申请号	GB19630006364	申请日期	1963.02.16
申请人	NORMAN TURNER	发明人
分类号	B28B21/56;E04C5/16	主分类号	B28B21/56
代理机构		代理人
主权项
地址

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