| All Patents in class 451/190 |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
 | 78,915 | Jun. 16, 1868 | E.C. Atkins | Improvement in machines for polishing metal plates |
| | 322,838 | Jul. 21, 1885 | W.C. Margedant | Machine for finishing plow-beams |
| | 544,288 | Aug. 13, 1895 | H.W. Cole | Lathe for irregular shapes |
| | 651,839 | Jun. 19, 1900 | A.D. Erb | Sanding machine |
| | 799,442 | Sep. 12, 1905 | H.L. Bornman | Sanding-machine |
 | 811,454 | Jan. 30, 1906 | J.A. Stowell | Polishing-machine |
| | 1,611,135 | Dec. 14, 1926 | F.C. Sanford | Grinding Machine |
| | 1,611,136 | Dec. 14, 1926 | F.C. Sanford | Centerless Grinding Machine for Tapering Drills and the Like |
| | 1,733,094 | Oct. 22, 1929 | H. Isler | Centerless Grinder |
| | 1,794,975 | Mar. 03, 1931 | R. Mershon | Grinding Machine |
