| All Patents in class 408/185 |
Patents 1 -
15
of 19
      |
| Number | Date | Patentee | Title | Type |
| 23,364 | Mar. 29, 1859 | L.F. Goodyear | Turning Metal | portable turning tools |
| 241,482 | May 17, 1881 | L.R. Faught | Boring-bar | drill bits |
| 297,941 | Apr. 29, 1884 | O.J. Kosiol | Screw Cutting Die | taps and dies |
| 470,295 | Mar. 08, 1892 | F.C. Mahler, F.J. Feldt | Metal Reamer | reamers |
| 802,737 | Oct. 24, 1905 | E.E. Davis | Expansion boring-tool | boring heads |
| 1,046,740 | Dec. 10, 1912 | E.E. Davis | Boring-tool | boring heads |
| 1,062,225 | May 20, 1913 | C.J. Crowley | Tool Holder | drilling and boring tool holders |
| 1,727,452 | Sep. 10, 1929 | C.A. Swenson | Expansive bit | adjustable drill bits |
| 2,204,855 | Jun. 18, 1940 | F.P. Healy | Boring head | boring heads |
| 2,330,692 | Sep. 28, 1943 | C.B. De Vlieg | Boring tool | boring heads |
| 2,452,828 | Nov. 02, 1948 | N. Bell | Boring Head | boring heads |
| 2,783,527 | Mar. 05, 1957 | A. Davidson | Tool Holder | metalworking machine tool holders |
| 2,874,597 | Feb. 24, 1959 | B.E. Bach | Micrometric Boring Head | boring heads |
| 3,044,323 | Jul. 17, 1962 | A.N. Sweeny | Adjustable boring head | boring heads |
| 3,067,636 | Dec. 11, 1962 | R. Breuning | Boring Head | boring heads |
