| All Patents in class 408/150 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 19,752 | Mar. 30, 1858 | R.H. Cole | Screw Cutting Machine | screw machines |
| 100,891 | Mar. 15, 1870 | H.H. Heskett | Improved Lathe for Setting Jewels in Time-Pieces | watchmakers lathes |
| 209,774 | Nov. 12, 1878 | O. Pederson | Screw Cutting Die | taps and dies |
| 336,024 | Feb. 09, 1886 | G.D. Tucker | Screw Threading Tool | taps and dies |
| 690,300 | Dec. 31, 1901 | A.B. Landis | Cutter-head | screw machines |
| 900,617 | Oct. 06, 1908 | H.A. Crevier, J.E. Trotter | Stock and Die | taps and dies |
| 909,401 | Jan. 12, 1909 | E. Haber | Reamer | reamers |
| 1,513,024 | Oct. 28, 1924 | H. Schumacher, E.L. Baumann | Reamer Head | reamers |
| 1,983,190 | Dec. 04, 1934 | A.J. Prance | Thread cutting tool | tapping heads and chucks |
| 2,780,467 | Feb. 05, 1957 | R.O. Jackson | Eccentric Boring Head | boring heads |
| 3,159,060 | Dec. 01, 1964 | W.N. Miles | Offset Boring Head | boring heads |
| 3,598,499 | Aug. 10, 1971 | J.A. Dillon, Jr. | Boring Head Assembly | boring heads |
| 3,599,517 | Aug. 17, 1971 | J. Müller | Boring and facing head for machine tools | boring heads |
| 4,154,555 | May 15, 1979 | F.C. Skrentner | Multiple Boring Head | boring heads |
| 4,211,510 | Jul. 08, 1980 | D.A. Hopkins | Adjustable Boring Head | boring heads |
