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发明名称
SPEED GEAR FOR BICYCLES
摘要
申请公布号
CA380618(A)
申请公布日期
1939.04.11
申请号
CAD380618
申请日期
申请人
GEORGES ROES
发明人
GEORGES ROES
分类号
主分类号
代理机构
代理人
主权项
地址
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