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发明名称
Fully automatic machine for making double bodied torsion coiled springs
摘要
申请公布号
US2705027(A)
申请公布日期
1955.03.29
申请号
US19500198543
申请日期
1950.12.01
申请人
SANBORN ROBERT H
发明人
SANBORN ROBERT H.
分类号
B21F3/02;B21F35/00
主分类号
B21F3/02
代理机构
代理人
主权项
地址
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