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发明名称
Apparatus for and method of making valve spring retainer locks
摘要
申请公布号
US2094850(A)
申请公布日期
1937.10.05
申请号
US19350024352
申请日期
1935.05.31
申请人
THOMPSON PRODUCTS, INCORPORATED
发明人
SCHOENROCK OTTO R.
分类号
B21K1/20
主分类号
B21K1/20
代理机构
代理人
主权项
地址
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