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发明名称
WATERPROOFING AGENT FOR CONCRETE
摘要
申请公布号
CA443305(A)
申请公布日期
1947.07.29
申请号
CAD443305
申请日期
申请人
G. F. STERNE AND SONS
发明人
CECIL H. WASTLE
分类号
主分类号
代理机构
代理人
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