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发明名称
Knurling tools for external cylindrical surfaces
摘要
申请公布号
US2798390(A)
申请公布日期
1957.07.09
申请号
US19530370275
申请日期
1953.07.27
申请人
PORTO KNURLING TOOLS, INC.
发明人
BENNETT ANTHONY
分类号
B21H7/14;B23P15/10
主分类号
B21H7/14
代理机构
代理人
主权项
地址
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