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发明名称
Improvement in expansible pulleys
摘要
申请公布号
GB498270(A)
申请公布日期
1939.01.05
申请号
GB19370034702
申请日期
1937.12.15
申请人
HENRY WYATT DICKERSON
发明人
分类号
F16H55/54
主分类号
F16H55/54
代理机构
代理人
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