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发明名称
Perfectionnements aux manivelles à extension automatique pour bicyclettes
摘要
申请公布号
FR838660(A)
申请公布日期
1939.03.13
申请号
FRD838660
申请日期
1937.11.22
申请人
发明人
DANEL FRANCOIS LEOPOLD AUGUSTE
分类号
B62M3/04
主分类号
B62M3/04
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代理人
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