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发明名称
Change speed gears
摘要
申请公布号
US2926538(A)
申请公布日期
1960.03.01
申请号
US19550555698
申请日期
1955.12.27
申请人
KARL SCHAFER
发明人
SCHAFER KARL
分类号
F16H3/36
主分类号
F16H3/36
代理机构
代理人
主权项
地址
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