| All Patents in class 451/194 |
Patents 1 -
15
of 17
      |
| Number | Title | Classification(s) |
| 5,658X | Rubbing down and polishing combs | 451/194 |
| 425,186 | Grinding-machine | 451/194 |
| 631,842 | Sharpening-machine | 264/112, 451/194 |
| 654,215 | Sharpening Machine | 29/DIG.70, 451/194, 451/450 |
| 799,442 | Sanding-machine | 451/190, 451/194, 451/207, 451/211, 451/301, 451/302, 451/65 |
| 1,262,008 | Razor Blade Sharpener | 451/194, 76/81.7 |
| 1,264,930 | Roll Grinding Machine | 451/194, 451/209, 451/244, 451/284, 451/407 |
| 1,271,715 | Razor Blade Sharpening Machine | 451/194 |
| 1,709,348 | Method and Apparatus for Producing Ground Articles | 125/11.01, 451/194, 451/242 |
| 1,729,780 | Centerless Grinding Machine | 451/194, 451/244 |
| 1,733,086 | Centerless Grinder | 451/189, 451/194, 451/242 |
| 1,733,090 | Centerless Grinder | 125/11.15, 29/DIG.88, 451/194, 451/242 |
| 1,733,097 | Centerless Grinding Machine | 451/194, 451/244, 451/335 |
| 1,737,852 | Centerless Grinding Machine | 451/194, 451/242 |
| 1,794,975 | Grinding Machine | 125/11.15, 451/190, 451/194, 451/209 |
