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发明名称
Motor control system for electric elevator installations
摘要
申请公布号
US1814501(A)
申请公布日期
1931.07.14
申请号
US19270192856
申请日期
1927.05.20
申请人
ANDERSON EDWIN O
发明人
ANDERSON EDWIN O.
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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