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发明名称
Auswechselbares Ringlager fuer Fahrradtretkurbeln
摘要
申请公布号
DE505291(C)
申请公布日期
1930.08.18
申请号
DENDATW080854D
申请日期
申请人
CURT WARZ
发明人
分类号
B62K19/34
主分类号
B62K19/34
代理机构
代理人
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