| All Patents in class 451/209 |
Patents 1 -
15
of 16
      |
| Number | Title | Classification(s) |
| 79,610 | Machine for Polishing Spherical Shot and Shells | 451/209 |
| 1,176,180 | Grinding-Machine | 451/209, 451/331, 476/12, 476/49 |
| 1,264,930 | Roll Grinding Machine | 451/194, 451/209, 451/244, 451/284, 451/407 |
| 1,483,748 | Grinding Machine | 125/11.21, 451/209, 451/231, 451/242 |
| 1,611,135 | Grinding Machine | 451/182, 451/190, 451/209, 451/244 |
| 1,683,974 | Grinding Apparatus | 451/209, 451/242, 451/364 |
| 1,692,834 | Art and Apparatus for Producing Ground Articles | 451/209, 451/242 |
| 1,707,708 | Process for the Production of Spherical Articles | 451/209, 451/244, 451/284, 451/331, 451/49 |
| 1,722,386 | Centerless Grinding Machine | 188/204R, 451/197, 451/209, 451/242, 451/335, 451/407 |
| 1,722,387 | Centerless Grinding Machine | 451/197, 451/209, 451/244 |
| 1,733,087 | Grinding Apparatus | 451/182, 451/189, 451/209, 451/243, 451/394 |
| 1,794,975 | Grinding Machine | 125/11.15, 451/190, 451/194, 451/209 |
| 1,873,423 | Grinding Machine | 451/209 |
| 2,000,586 | Grinding Machine | 451/209, 451/242 |
| 2,280,620 | Apparatus for Finishing Tubular Articles | 279/2.01, 279/2.05, 279/2.23, 279/22, 279/30, 279/75, 451/209, 451/242, 492/42, 82/168 |
