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发明名称
Safety elevator
摘要
申请公布号
US2545457(A)
申请公布日期
1951.03.20
申请号
US19490130086
申请日期
1949.11.30
申请人
GAMMELL ROBERT M
发明人
GAMMELL ROBERT M.
分类号
B66B5/26
主分类号
B66B5/26
代理机构
代理人
主权项
地址
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