| All Patents in class 451/413 |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| 425,230 | Apr. 08, 1890 | A.B. Landis | Grinding-machine | grinders |
| 437,284 | Sep. 30, 1890 | W.G. Budlong | Combined metal-working machine | metalworking machines |
| 1,223,155 | Apr. 17, 1917 | A.M. Drake | Table driving and feeding mechanism for grinding machines | grinders |
| 1,316,221 | Sep. 16, 1919 | C.M. Conradson | Metal Working Machine | milling machines |
| 1,392,325 | Oct. 04, 1921 | B.M. Hanson | Vertical Surface Grinding Machine | surface grinders |
| 2,252,627 | Aug. 12, 1941 | G. Gorton | Machine Tool of the Sensitive Table Type | metalworking machine mechanisms |
| 2,370,041 | Feb. 20, 1945 | J. Jesionowski | External grinder | grinders |
| 3,772,961 | Nov. 20, 1973 | W.R. Siebert | Hydrostatic Rotary Table | rotary tables |
| 4,211,512 | Jul. 08, 1980 | F. Zankl | Rotary Table With Ballscrew Drive | rotary tables |
| 5,807,162 | Sep. 15, 1998 | A.P. Dana | Grinding Apparatus, and Process for the Operation Thereof | surface grinders |
