| All Patents in class 408/185 |
Patents 1 -
10
of 19
      |
| Picture | Number | Date | Patentee | Title |
| | 23,364 | Mar. 29, 1859 | L.F. Goodyear | Turning Metal |
 | 241,482 | May 17, 1881 | L.R. Faught | Boring-bar |
| | 297,941 | Apr. 29, 1884 | O.J. Kosiol | Screw Cutting Die |
| | 470,295 | Mar. 08, 1892 | F.C. Mahler, F.J. Feldt | Metal Reamer |
 | 802,737 | Oct. 24, 1905 | E.E. Davis | Expansion boring-tool |
 | 1,046,740 | Dec. 10, 1912 | E.E. Davis | Boring-tool |
| | 1,062,225 | May 20, 1913 | C.J. Crowley | Tool Holder |
 | 1,727,452 | Sep. 10, 1929 | C.A. Swenson | Expansive bit |
| | 2,204,855 | Jun. 18, 1940 | F.P. Healy | Boring head |
 | 2,330,692 | Sep. 28, 1943 | C.B. De Vlieg | Boring tool |
