| All Patents in class 409/224 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 596,670 | Jan. 04, 1898 | O. Tyberg | Milling-machine | milling machines |
| 614,247 | Nov. 15, 1898 | H. Goldsmith, E.T. Goodhew | Grinding Machine | tool grinders |
| 982,791 | Jan. 31, 1911 | E.C. Brull | Filing-machine | filing machines |
| 1,395,664 | Nov. 01, 1921 | E. Benson | Work Support | grinding fixtures |
| 2,111,299 | Mar. 15, 1938 | O.E. Robbins | Magnetic Sine Table | angle bars and angle plates |
| 2,397,086 | Mar. 26, 1946 | S.G. Brady | Method and Apparatus for Cutting Keyways | milling machine accessories |
| 4,369,958 | Jan. 25, 1983 | R.A. Maynard | Rotating table positioning device with minimum backlash | rotary tables |
| 4,705,438 | Nov. 10, 1987 | S.S. Zimmerman, L.W. Syarto | Machining center having an inclinable vacuum-holding worktable | work holding |
