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发明名称
Chuck
摘要
申请公布号
US2384302(A)
申请公布日期
1945.09.04
申请号
US19440543509
申请日期
1944.07.05
申请人
HAMMOND MACHINERY BUILDERS, INC.
发明人
HARRISON NORMAN A.
分类号
B23B31/175
主分类号
B23B31/175
代理机构
代理人
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