| All Patents in class 408/714 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 341,938 | May 18, 1886 | C.L. Perkins | Cleaning Tool | metalworking countersinks |
| 460,922 | Oct. 06, 1891 | S.B. Minnich | Compensating bit-holder | |
| 475,560 | May 24, 1892 | E.C. Heydenreich | Plug-Cutter | hollow bits |
| 1,680,466 | Aug. 14, 1928 | W.H. Evans | Reaming tool | reamers |
| 1,680,510 | Aug. 14, 1928 | W.H. Evans | Valve-seat reamer | valve and seat maintenance |
| 1,827,510 | Oct. 13, 1931 | W.H. Evans | Valve seat reamer | valve and seat maintenance |
| 1,827,511 | Oct. 13, 1931 | W.H. Evans | Reamer | valve and seat maintenance |
| 2,811,875 | Nov. 05, 1957 | S.A. Cogsdill | Twist Drill Having Oil Passages Therein and Method of Construction | metalworking twist drills |
| 2,820,378 | Jan. 21, 1958 | W.D. Reynolds, G.S. Randles | Self-Aligning Tool Holder | drilling and boring tool holders |
| 2,895,356 | Jul. 21, 1959 | S.A. Cogsdill | Deburring Tool | deburring tools |
| 3,178,739 | Apr. 20, 1965 | W.M. Ritter, H.R. Plummer | Double Float Tool Holder | milling machine tools |
