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发明名称
Machine for the production of split rings
摘要
申请公布号
US1856953(A)
申请公布日期
1932.05.03
申请号
US19300421465
申请日期
1930.01.17
申请人
BERNHARD FORSTER
发明人
FORSTER BERNHARD
分类号
B21F37/02
主分类号
B21F37/02
代理机构
代理人
主权项
地址
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