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经营范围
发明名称
Paving block
摘要
申请公布号
US2545046(A)
申请公布日期
1951.03.13
申请号
US19450615651
申请日期
1945.09.11
申请人
ROWND WILBUR E
发明人
ROWND WILBUR E.
分类号
E01C5/04
主分类号
E01C5/04
代理机构
代理人
主权项
地址
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