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经营范围
发明名称
Fire escape
摘要
申请公布号
US1838705(A)
申请公布日期
1931.12.29
申请号
US19290400006
申请日期
1929.10.16
申请人
EPPS ROBERTSON WILLIAM
发明人
ROBERTSON WILLIAM EPPS
分类号
A62B1/20
主分类号
A62B1/20
代理机构
代理人
主权项
地址
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