| All Patents in class 408/198 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 7,004 | Jan. 08, 1850 | L.W. Miller | Hub-boring machine | wheelwright |
| 463,507 | Nov. 17, 1891 | A.D. Goodell, H.E. Goodell | Push Drill | push drills |
| 850,177 | Apr. 16, 1907 | J.T. Parker | Adjustable Auger Bit | adjustable drill bits |
| 874,027 | Dec. 17, 1907 | G. Nelson | Tool Holder | drilling and boring tool holders |
| 882,529 | Mar. 17, 1908 | R.N. Melvin | Reamer and Boring Head | boring heads |
| 1,201,673 | Oct. 17, 1916 | G. Amborn | Boring Tool or Tool Holder | boring bars |
| 1,479,124 | Jan. 01, 1924 | F.D. Winkley | Counterboring or counterfacing tool | |
| 1,520,382 | Dec. 23, 1924 | R.W. Workman | Boring Head | boring heads |
| 1,660,361 | Feb. 28, 1928 | O. Severson | Boring Head | boring heads |
| 1,688,558 | Oct. 23, 1928 | O. Severson | Hollow Mill | milling machine cutters |
| 2,492,797 | Dec. 27, 1949 | E. Guetzkow | Milling Cutter | milling machine cutters |
| 2,913,935 | Nov. 24, 1959 | W.B. Stein, R.E. Novkov, F.A. Flannery | Tool Holder | drilling and boring tool holders |
| 4,231,691 | Nov. 04, 1980 | H. Woerz, D. Pape | Dual Cutter Boring Head | boring heads |
