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发明名称
Controlling rate of acceleration and retardation of elevator equipment
摘要
申请公布号
US1979102(A)
申请公布日期
1934.10.30
申请号
US19310558522
申请日期
1931.08.21
申请人
GENERAL ELECTRIC COMPANY
发明人
EATON JOHN
分类号
H02P7/34
主分类号
H02P7/34
代理机构
代理人
主权项
地址
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