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经营范围
发明名称
Improvements relating to variable speed gear
摘要
申请公布号
GB349515(A)
申请公布日期
1931.05.27
申请号
GB19300006493
申请日期
1930.02.27
申请人
ROBERT GRECHAN CARR
发明人
分类号
B62M25/00
主分类号
B62M25/00
代理机构
代理人
主权项
地址
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