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发明名称
Change speed mechanism
摘要
申请公布号
US2091211(A)
申请公布日期
1937.08.24
申请号
US19360067340
申请日期
1936.03.05
申请人
PIETRO MATTIA
发明人
MATTIA PIETRO
分类号
F16H33/16
主分类号
F16H33/16
代理机构
代理人
主权项
地址
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