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发明名称
Change gear
摘要
申请公布号
US2077556(A)
申请公布日期
1937.04.20
申请号
US19350020968
申请日期
1935.05.11
申请人
GASTON RALPH M
发明人
GASTON RALPH M.
分类号
F16H33/18
主分类号
F16H33/18
代理机构
代理人
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