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发明名称
Knurling device
摘要
申请公布号
US2338186(A)
申请公布日期
1944.01.04
申请号
US19420448093
申请日期
1942.06.23
申请人
R. G. LE TOURNEAU, INC.
发明人
TOURNEAU ROBERT G. LE
分类号
B23B27/24;B23P9/02
主分类号
B23B27/24
代理机构
代理人
主权项
地址
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