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发明名称
Magnetic nail holder
摘要
申请公布号
US2491860(A)
申请公布日期
1949.12.20
申请号
US19460696609
申请日期
1946.09.12
申请人
INGRAHAM ROBERT P
发明人
INGRAHAM ROBERT P.
分类号
B25C3/00
主分类号
B25C3/00
代理机构
代理人
主权项
地址
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