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发明名称
Self-gripping mandrel
摘要
申请公布号
US2798678(A)
申请公布日期
1957.07.09
申请号
US19530396029
申请日期
1953.12.03
申请人
COLUMBIA RIBBON AND CARBON MANUFACTURING COMPANY, INC.
发明人
DADD JOHN V.
分类号
B23B31/40;B31C1/08;B65H75/08;H01G13/02
主分类号
B23B31/40
代理机构
代理人
主权项
地址
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