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经营范围
发明名称
Improvements in or relating to variable speed friction gearing
摘要
申请公布号
GB380485(A)
申请公布日期
1932.09.16
申请号
GB19310017497
申请日期
1931.06.16
申请人
发明人
Frank Anderson Hayes
分类号
F16H15/38;F16H15/52;F16H61/664
主分类号
F16H15/38
代理机构
代理人
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地址
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