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经营范围
发明名称
Stair elevator
摘要
申请公布号
US2674347(A)
申请公布日期
1954.04.06
申请号
US19460672179
申请日期
1946.05.25
申请人
LLOYD C. SCHWARTZ
发明人
THOMPSON IRVING C.
分类号
B66B9/08
主分类号
B66B9/08
代理机构
代理人
主权项
地址
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