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发明名称
Change speed wheel
摘要
申请公布号
US1882627(A)
申请公布日期
1932.10.11
申请号
US19300431843
申请日期
1930.02.27
申请人
N. P. NELSON IRON WORKS, INC.
发明人
JAMES FREDERIC W.
分类号
B60K17/22
主分类号
B60K17/22
代理机构
代理人
主权项
地址
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