| All Patents in class 451/189 |
Patents 1 -
10
of 16
      |
| Picture | Number | Date | Patentee | Title |
 | 70,788 | Nov. 12, 1867 | T. Birch, A. Sowden | Improvement in grinding machine for circular saws |
| | 398,243 | Feb. 19, 1889 | H. Ferguson | Machine for finishing poles or rods |
 | 432,144 | Jul. 15, 1890 | W.J. Muncaster | Machine for Polishing Shafting |
| | 505,221 | Sep. 19, 1893 | T. Harper | Machine for Buffing Metal Tubes |
| | 1,264,129 | Apr. 23, 1918 | M.O. Reeves | Grinding Machine |
 | 1,419,073 | Jun. 06, 1922 | C.H. Norton | Machine for forming rolls |
| | 1,524,969 | Feb. 03, 1925 | L.F. Nenninger, S. Einstein | Centerless Grinding Machine |
| | 1,639,958 | Aug. 23, 1927 | C.H. Norton | Centerless Grinding Machine |
| | 1,733,086 | Oct. 22, 1929 | E. Sobolewski | Centerless Grinder |
| | 1,733,087 | Oct. 22, 1929 | L.R. Heim | Grinding Apparatus |
