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经营范围
发明名称
Variable speed transmission
摘要
申请公布号
US2178784(A)
申请公布日期
1939.11.07
申请号
US19370175132
申请日期
1937.11.17
申请人
EWART WILLIAM E
发明人
EWART WILLIAM E.
分类号
F16H29/14
主分类号
F16H29/14
代理机构
代理人
主权项
地址
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