| All Patents in class 470/98 |
Patents 1 -
10
of 11
      |
| Picture | Number | Date | Patentee | Title |
| | 415,846 | Nov. 26, 1889 | F.H. Richards | Screw Tapping Machine |
| | 735,138 | Aug. 04, 1903 | J.M. Normand | Tool Holder |
 | 807,166 | Dec. 12, 1905 | C.W. Grant | Tool-holder and tool |
| | 908,804 | Jan. 05, 1909 | W.M. Rhoades | Tool Holder |
 | 1,254,709 | Jan. 29, 1918 | D. Levinger, O. Anderson | Tapping Machine |
| | 1,613,369 | Jan. 04, 1927 | E.L. Worbois | Nut-Tapping Machine |
| | 1,679,529 | Aug. 07, 1928 | A.M. Johnson | Automatic machine tool |
| | 1,708,183 | Apr. 09, 1929 | A. Levedahl | Spindle lock |
| | 1,791,532 | Feb. 10, 1931 | H. Hansen, E.L. Oberly | Semiautomatic Drill and Tapping Jig |
| | 2,271,717 | Feb. 03, 1942 | A.A. Schwartz | Countersinking and blind drilling machine |
