发明名称 |
Method and means of manufacturing a rotary cutting tool |
摘要 |
The production of rotary cutting tools using very small amounts of premium alloy steel such as tungsten or cobalt as the primary cutting or wearing surface welded to a longer lower grade of tool steel as the secondary wearing or cutting surface.
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申请公布号 |
US4383784(A) |
申请公布日期 |
1983.05.17 |
申请号 |
US19810312263 |
申请日期 |
1981.10.16 |
申请人 |
PRECISION TWIST DRILL & MACHINE CO. |
发明人 |
GULBRANDSEN, RICHARD C. |
分类号 |
B23P15/32;(IPC1-7):B23B27/18;B23B51/02 |
主分类号 |
B23P15/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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