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发明名称
Elevator-control device
摘要
申请公布号
US1784933(A)
申请公布日期
1930.12.16
申请号
US19280270133
申请日期
1928.04.14
申请人
JACKSON JR JOSEPH R
发明人
JR. JOSEPH R. JACKSON,
分类号
B66B1/08
主分类号
B66B1/08
代理机构
代理人
主权项
地址
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