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发明名称
Spring coupling machine
摘要
申请公布号
US2150755(A)
申请公布日期
1939.03.14
申请号
US19370171489
申请日期
1937.10.28
申请人
NACHMAN SPRINGFILLED CORPORATION
发明人
ZIMMERMAN FRED R.
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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