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发明名称
Spool
摘要
申请公布号
US2250563(A)
申请公布日期
1941.07.29
申请号
US19390290157
申请日期
1939.08.15
申请人
DECORATED METAL MANUFACTURING COMPANY, INC.
发明人
ATWOOD RAWSON
分类号
B65H75/14
主分类号
B65H75/14
代理机构
代理人
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