| All Patents in class 451/184 |
Patents 16 -
21
of 21
      |
| Number | Date | Patentee | Title | Type |
| 1,950,030 | Mar. 06, 1934 | C.L. Hawes | Grinding and Polishing Machine | polishing machines |
| 2,088,119 | Jul. 27, 1937 | B.P. Schiltz | Method of machining metallic workpieces | metalworking machines |
| 2,245,654 | Jun. 17, 1941 | J.D. Rovick, J.C. Drader | Gear Lapping and Finishing Machine | gear lapping machines |
| 2,456,217 | Dec. 14, 1948 | L.L. Rothrock | Sanding machine | sanding machines |
| 2,554,079 | May 22, 1951 | J.C. Wilson | Method and Apparatus for Continuous Form Grinding | surface grinders |
| 7,198,557 | Apr. 03, 2007 | D.E. Haney | Sanding machine incorporating multiple sanding motions | sanding machines |
