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发明名称
Machine for and method of forming a spring casing
摘要
申请公布号
US2153861(A)
申请公布日期
1939.04.11
申请号
US19360086556
申请日期
1936.06.22
申请人
F. L. JACOBS COMPANY
发明人
CHESLEY WALTER R.
分类号
B21D53/00;B21D53/88
主分类号
B21D53/00
代理机构
代理人
主权项
地址
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