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发明名称
Tandem chuck wind-up
摘要
申请公布号
US2647697(A)
申请公布日期
1953.08.04
申请号
US19480008789
申请日期
1948.02.17
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
JR. FRANK SCOTT POLLOCK,
分类号
B65H54/20
主分类号
B65H54/20
代理机构
代理人
主权项
地址
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