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经营范围
发明名称
Machine for wiping in hardened inserts for rock drill bits
摘要
申请公布号
US2662500(A)
申请公布日期
1953.12.15
申请号
US19490103868
申请日期
1949.07.09
申请人
THE TIMKEN ROLLER BEARING COMPANY
发明人
FORT FRANK;KRUG EUGENE C.
分类号
B23K31/02
主分类号
B23K31/02
代理机构
代理人
主权项
地址
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