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发明名称
Machine for cutting and fastening helical springs
摘要
申请公布号
US2161689(A)
申请公布日期
1939.06.06
申请号
US19380229300
申请日期
1938.09.10
申请人
THE UNITED STATES BEDDING COMPANY
发明人
STRANDBERG JOEL G.
分类号
B21F33/04
主分类号
B21F33/04
代理机构
代理人
主权项
地址
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