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发明名称
Speed controller
摘要
申请公布号
US2198035(A)
申请公布日期
1940.04.23
申请号
US19350047008
申请日期
1935.10.28
申请人
WALTER FERRIS
发明人
FERRIS WALTER
分类号
G05D13/00
主分类号
G05D13/00
代理机构
代理人
主权项
地址
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