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经营范围
发明名称
Machine for making partly open rings
摘要
申请公布号
US2712835(A)
申请公布日期
1955.07.12
申请号
US19520284306
申请日期
1952.04.25
申请人
THE TORRINGTON MANUFACTURING COMPANY
发明人
SAMPATACOS PETER M.;JR. EDWARD E. FRANKS,
分类号
B21F37/00;B21F37/02
主分类号
B21F37/00
代理机构
代理人
主权项
地址
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