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发明名称
Safety device for elevators
摘要
申请公布号
US1797034(A)
申请公布日期
1931.03.17
申请号
US19290359010
申请日期
1929.04.29
申请人
THOMAS ELEVATOR COMPANY
发明人
WILSON ALEXANDER H.
分类号
B66B5/26
主分类号
B66B5/26
代理机构
代理人
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地址
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