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经营范围
发明名称
An improved drag or braking device for swifts, bobbins and the like
摘要
申请公布号
GB410853(A)
申请公布日期
1934.05.28
申请号
GB19320033504
申请日期
1932.11.26
申请人
JAMES DUGELBY
发明人
分类号
B65H49/30
主分类号
B65H49/30
代理机构
代理人
主权项
地址
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