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发明名称
EXPANSION JOINT FOR CONCRETE ROADS
摘要
申请公布号
CA327610(A)
申请公布日期
1932.11.15
申请号
CAD327610
申请日期
申请人
THE BARRETT COMPANY
发明人
FREDERICK S. FLECKENSTEIN
分类号
主分类号
代理机构
代理人
主权项
地址
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