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发明名称
HOLLOW STACKABLE BUILDING BLOCK
摘要
申请公布号
CA2029710(A1)
申请公布日期
1992.05.10
申请号
CA19902029710
申请日期
1990.11.09
申请人
LEWIS, JOHN F.
发明人
LEWIS, JOHN F.
分类号
E04B1/12
主分类号
E04B1/12
代理机构
代理人
主权项
地址
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