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经营范围
发明名称
GRATING
摘要
A grating for use as a cover for a channel, basin, or trough pit or as a shoe cleaner, consisting of a number of bars arranged parallel to each other and connected in the transverse direction by holding elements spaced from each other.
申请公布号
US3862464(A)
申请公布日期
1975.01.28
申请号
US19730391884
申请日期
1973.08.27
申请人
ARENS, ERICH
发明人
ARENS, ERICH
分类号
A47L23/24;E04C2/42;E04D13/12;E04F19/10;(IPC1-7):E04C2/42
主分类号
A47L23/24
代理机构
代理人
主权项
地址
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