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发明名称
Spring winding apparatus having a carriage advancing rack with blank tooth portion
摘要
申请公布号
US2792870(A)
申请公布日期
1957.05.21
申请号
US19560578671
申请日期
1956.04.17
申请人
CARLSON HAROLD C R
发明人
CARLSON HAROLD C. R.
分类号
B21F3/02;B21F3/04
主分类号
B21F3/02
代理机构
代理人
主权项
地址
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