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发明名称
Elevator door control
摘要
申请公布号
US2009342(A)
申请公布日期
1935.07.23
申请号
US19310513553
申请日期
1931.02.05
申请人
ILLINOIS ELEVATOR COMPANY
发明人
NIELSEN CHRISTIAN
分类号
B66B13/08
主分类号
B66B13/08
代理机构
代理人
主权项
地址
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