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发明名称
Spring unit lacing machine
摘要
申请公布号
US2694418(A)
申请公布日期
1954.11.16
申请号
US19480017867
申请日期
1948.03.30
申请人
JOHNSON SPRING CUSHION COMPANY
发明人
BERGSTROM VICTOR J.
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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