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发明名称
Changement de vitesse à action progressive pour bicyclettes
摘要
申请公布号
FR822080(A)
申请公布日期
1937.12.20
申请号
FRD822080
申请日期
1936.08.10
申请人
发明人
ROES GEORGES
分类号
B62M25/00;F16H29/18
主分类号
B62M25/00
代理机构
代理人
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