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发明名称
Dispositif pour changement de vitesse automatique ou pour indicateur des vitesses relatives de deux arbres
摘要
申请公布号
FR687030(A)
申请公布日期
1930.08.04
申请号
FRD687030
申请日期
1929.12.20
申请人
发明人
BARTHELEMY PIERRE
分类号
F16H61/662;G01P3/06
主分类号
F16H61/662
代理机构
代理人
主权项
地址
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