| All Patents in class 408/714 |
Patents 1 -
10
of 11
      |
| Picture | Number | Date | Patentee | Title |
| | 341,938 | May 18, 1886 | C.L. Perkins | Cleaning Tool |
| | 460,922 | Oct. 06, 1891 | S.B. Minnich | Compensating bit-holder |
 | 475,560 | May 24, 1892 | E.C. Heydenreich | Plug-Cutter |
 | 1,680,466 | Aug. 14, 1928 | W.H. Evans | Reaming tool |
 | 1,680,510 | Aug. 14, 1928 | W.H. Evans | Valve-seat reamer |
 | 1,827,510 | Oct. 13, 1931 | W.H. Evans | Valve seat reamer |
 | 1,827,511 | Oct. 13, 1931 | W.H. Evans | Reamer |
| | 2,811,875 | Nov. 05, 1957 | S.A. Cogsdill | Twist Drill Having Oil Passages Therein and Method of Construction |
| | 2,820,378 | Jan. 21, 1958 | W.D. Reynolds, G.S. Randles | Self-Aligning Tool Holder |
| | 2,895,356 | Jul. 21, 1959 | S.A. Cogsdill | Deburring Tool |
