| All Patents in class 408/170 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 265,272 | Oct. 03, 1882 | V. Moeslein | Expanding Reamer | reamers |
| 321,116 | Jun. 30, 1885 | J. Groves, P.J. Kelly | Adjustable Reamer | reamers |
| 1,265,888 | May 14, 1918 | D.H. Dugar | Expansible Reamer | |
| 1,902,062 | Mar. 21, 1933 | W.H. Evans | Expansion reamer | reamers |
| 2,138,727 | Nov. 29, 1938 | S.A. Cogsdill | Cutting Tool | reamers |
| 2,457,040 | Dec. 21, 1948 | W.P. Hall | Boring Head | boring heads |
| 2,543,224 | Feb. 27, 1951 | W.J. Blazek | Adjustable reamer | reamers |
| 3,364,799 | Jan. 23, 1968 | W.N. Miles, D.D. Walker, M.L. Benjamin | Offset Boring Head | boring heads |
