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发明名称
Perfectionnements dans les indicateurs de vitesse pour autos et pour arbres rotatifs
摘要
申请公布号
FR677037(A)
申请公布日期
1930.03.03
申请号
FRD677037
申请日期
1929.05.01
申请人
发明人
COLOMBO JEAN
分类号
G01P3/495
主分类号
G01P3/495
代理机构
代理人
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地址
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