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经营范围
发明名称
Improvements in or relating to variable speed drives
摘要
申请公布号
GB866503(A)
申请公布日期
1961.04.26
申请号
GB19590029930
申请日期
1959.09.02
申请人
MARTIN PRESTON
发明人
分类号
F16H47/08
主分类号
F16H47/08
代理机构
代理人
主权项
地址
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