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发明名称
Guard for doorways
摘要
申请公布号
US2113587(A)
申请公布日期
1938.04.12
申请号
US19330698890
申请日期
1933.11.20
申请人
TRUSCON STEEL COMPANY
发明人
GORAR LOUIS J.
分类号
E06B3/01
主分类号
E06B3/01
代理机构
代理人
主权项
地址
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