| All Patents in class 144/28.8 |
Patents 1 -
10
of 13
      |
| Picture | Number | Date | Patentee | Title |
 | 89,109 | Apr. 20, 1869 | S.S. Woodcock | Improvement in pencil-sharpeners |
 | 203,550 | May 14, 1878 | F. Livingston | Improvement in machines for sharpening pencils |
 | 291,235 | Jan. 01, 1884 | W.E. Sibley | Pencil-sharpener |
 | 342,350 | May 25, 1886 | F.H. Cook, C.E. Gould | Pencil-sharpener |
 | 438,569 | Oct. 14, 1890 | L.N. Jackman, W. Rundquist | Machine for sharpening pencils |
 | 441,016 | Nov. 18, 1890 | A.J. Mundy | Pencil-sharpener |
 | 448,723 | Mar. 24, 1891 | J.D. Mills | Pencil-sharpener |
 | 459,180 | Sep. 08, 1891 | G.C. McDermott, J.D. Mills | Pencil-sharpener |
 | 554,608 | Feb. 11, 1896 | C.M. Walker | Pencil-sharpener |
 | 575,964 | Jan. 26, 1897 | P.L. Lord | Combined pencil-sharpener and eraser-cleaner |
