| All Patents in class 408/154 |
Patents 16 -
30
of 36
      |
| Number | Date | Patentee | Title | Type |
| 1,066,878 | Jul. 08, 1913 | S. Blocksom | Adjustable Boring Head | boring heads |
| 1,200,718 | Oct. 10, 1916 | H.L. Fisher | Cutter-head | pipe threading machines |
| 1,395,859 | Nov. 01, 1921 | H.V. Morin | Tool Holder | boring heads |
| 1,449,475 | Mar. 27, 1923 | E.H. Wheeler | Recessing Tool Holder | metalworking machine tool holders |
| 1,563,108 | Nov. 24, 1925 | A.J. Prance | Thread-cutting die | tapping heads and chucks |
| 1,704,741 | Mar. 12, 1929 | J. Hartness | Automatic Die | taps and dies |
| 1,766,598 | Jun. 24, 1930 | R.R. Finn, E.T. Bysshe | Screw-Cutting Die | tapping heads and chucks |
| 1,902,062 | Mar. 21, 1933 | W.H. Evans | Expansion reamer | reamers |
| 1,988,378 | Jan. 15, 1935 | A.I. Dunn | Boring Head and Gauge for Cylinder Reboring Machines | boring heads |
| 2,189,604 | Feb. 06, 1940 | F.P. Healy | Boring bar guiding mechanism | boring bars |
| 2,223,041 | Nov. 26, 1940 | T. Maxwell | Boring Head | boring heads |
| 2,274,007 | Feb. 24, 1942 | J.H. Smith | Boring tool | boring bars |
| 2,432,855 | Dec. 16, 1947 | W.J. Blazek | Expansion-type reamers and hones | reamers |
| 2,582,524 | Jan. 15, 1952 | J.Y. Blazek | Reamer and method of producing same | reamers |
| 2,590,068 | Mar. 18, 1952 | A.F. Pekrul | Combined Boring and Turning Tool | boring bars |
