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发明名称
Grating
摘要
申请公布号
US2246766(A)
申请公布日期
1941.06.24
申请号
US19390266312
申请日期
1939.04.06
申请人
KERLOW STEEL FLOORING CO.
发明人
TAROF ERNEST L.
分类号
E01D19/12;E04C2/42
主分类号
E01D19/12
代理机构
代理人
主权项
地址
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