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发明名称
Fire escape
摘要
申请公布号
US1852976(A)
申请公布日期
1932.04.05
申请号
US19310508261
申请日期
1931.01.12
申请人
LA ROY THOMAS E
发明人
ROY THOMAS E. LA
分类号
E06C1/56
主分类号
E06C1/56
代理机构
代理人
主权项
地址
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