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经营范围
发明名称
INTERLOCKING BUILDING BLOCKS AND SYSTEM FOR USING THE SAME
摘要
申请公布号
EP0166249(B1)
申请公布日期
1989.04.19
申请号
EP19850106576
申请日期
1983.02.10
申请人
CRESTON TECHNOLOGY, INC.
发明人
HANSON, GARY N.
分类号
E04B2/02;A63H33/08;A63H33/10;E04B2/18;E04C1/40
主分类号
E04B2/02
代理机构
代理人
主权项
地址
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