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发明名称
Spool
摘要
申请公布号
US2273525(A)
申请公布日期
1942.02.17
申请号
US19390302475
申请日期
1939.11.02
申请人
HOUDAILLE-HERSHEY CORPORATION
发明人
JOHNSON BERNARD C.
分类号
B21C47/28;B65H75/14
主分类号
B21C47/28
代理机构
代理人
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地址
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