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发明名称
Double toggle finger holder
摘要
申请公布号
US2252840(A)
申请公布日期
1941.08.19
申请号
US19390311107
申请日期
1939.12.27
申请人
THE NATIONAL ACME COMPANY
发明人
DRISSNER ALFRED E.
分类号
B23B31/20
主分类号
B23B31/20
代理机构
代理人
主权项
地址
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