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发明名称
Elevator door construction
摘要
申请公布号
US3389504(A)
申请公布日期
1968.06.25
申请号
US19660547528
申请日期
1966.05.04
申请人
WILLIAMSBURG STEEL PRODUCTS COMPANY
发明人
HALPERN ERNST
分类号
B66B13/30
主分类号
B66B13/30
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