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经营范围
发明名称
Collapsible spool
摘要
申请公布号
US2546253(A)
申请公布日期
1951.03.27
申请号
US19450611460
申请日期
1945.08.20
申请人
BEAUREGARD EUGENE O
发明人
BEAUREGARD EUGENE O.
分类号
B65H75/14
主分类号
B65H75/14
代理机构
代理人
主权项
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