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发明名称
Speed changer
摘要
申请公布号
US2216642(A)
申请公布日期
1940.10.01
申请号
US19380221196
申请日期
1938.07.25
申请人
DAVIS SAMUEL A
发明人
DAVIS SAMUEL A.
分类号
F16H15/14;F16H61/664
主分类号
F16H15/14
代理机构
代理人
主权项
地址
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