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发明名称
Grating structure
摘要
申请公布号
US2317174(A)
申请公布日期
1943.04.20
申请号
US19410381014
申请日期
1941.02.28
申请人
KERLOW STEEL FLOORING COMPANY
发明人
BUNKER HERBERT H.
分类号
E04C2/42
主分类号
E04C2/42
代理机构
代理人
主权项
地址
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