| All Patents in class 408/6 |
Patents 1 -
7
of 7
      |
| Picture | Number | Date | Patentee | Title |
| | 1,272,219 | Jul. 09, 1918 | W.L. Clark | Drilling Machine |
| | 2,263,404 | Nov. 18, 1941 | O.W. Barker, J.B. Armitage | Boring and Milling Machine |
| | 2,279,462 | Apr. 14, 1942 | R.T. Brokaw, C.O. Holland, E.F. Lundeen | Combined drilling and tapping machine |
| | 3,720,135 | Mar. 13, 1973 | R.E. Stobbe, K.R. Merner | Feedrate Controller |
| | 4,077,736 | Mar. 07, 1978 | M.L. Hutchens | Drill Speeder for Machine Tools |
| | 4,185,376 | Jan. 29, 1980 | R. Johnstone | Unmanned Machining Center With Tool Checking |
| | 4,266,120 | May 05, 1981 | R. Johnstone | Unmanned Machining Center With Tool Checking |
