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发明名称
Interlocking paving block
摘要
申请公布号
USD312881(S1)
申请公布日期
1990.12.11
申请号
US07/314210
申请日期
1989.02.22
申请人
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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