| All Patents in class 451/45 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 79,246 | Jun. 23, 1868 | M.V. Collins, M.M. Morse | Edge Tool Grinder | tool grinders |
| 197,711 | Nov. 27, 1877 | E.J. Worcester | Improvement in machines for grinding lawn-motor cutter | grinders |
| 240,829 | May 03, 1881 | J.A. Kimball | Lathe Arbor and Polishing Coil | metal lathe accessories and attachments |
| 485,697 | Nov. 08, 1892 | A. Johnston | Art of Grinding Cutlery or Other Tempered Steel Articles | sharpening apparatus |
| 516,146 | Mar. 06, 1894 | C.A. Worden | Machine for sharpening razors, shears, &c. | |
| 609,046 | Aug. 16, 1898 | R.E. Poindexter | Knife or scissors sharpener | sharpening jigs and fixtures |
| 993,398 | May 30, 1911 | O.B. Osborn | Adjusting and grinding planer-knives | woodworking machine sharpening mechanisms |
| 1,113,650 | Oct. 13, 1914 | W.A. Kelsey | Tool Holder | sharpening tool holders |
| 4,607,459 | Aug. 26, 1986 | S.C. Rees | Combined hollow grinder, sharpener and honer | |
