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发明名称
Copying attachment
摘要
申请公布号
US2303006(A)
申请公布日期
1942.11.24
申请号
US19410373849
申请日期
1941.01.09
申请人
EFFIE G. SWIRE
发明人
SWIRE MORRIS L.
分类号
B23Q35/20
主分类号
B23Q35/20
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代理人
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