| All Patents in class 408/198 |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
 | 7,004 | Jan. 08, 1850 | L.W. Miller | Hub-boring machine |
 | 463,507 | Nov. 17, 1891 | H.E. Goodell, A.D. Goodell | Push Drill |
 | 850,177 | Apr. 16, 1907 | J.T. Parker | Adjustable Auger Bit |
| | 874,027 | Dec. 17, 1907 | G. Nelson | Tool Holder |
| | 882,529 | Mar. 17, 1908 | R.N. Melvin | Reamer and Boring Head |
| | 1,201,673 | Oct. 17, 1916 | G. Amborn | Boring Tool or Tool Holder |
| | 1,479,124 | Jan. 01, 1924 | F.D. Winkley | Counterboring or counterfacing tool |
| | 1,520,382 | Dec. 23, 1924 | R.W. Workman | Boring Head |
| | 1,660,361 | Feb. 28, 1928 | O. Severson | Boring Head |
| | 1,688,558 | Oct. 23, 1928 | O. Severson | Hollow Mill |
