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经营范围
发明名称
Two-speed bicycle transmission
摘要
申请公布号
GB873987(A)
申请公布日期
1961.08.02
申请号
GB19580004321
申请日期
1958.02.10
申请人
CORLYN WAITE RICHARDS
发明人
分类号
B62M11/14
主分类号
B62M11/14
代理机构
代理人
主权项
地址
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