| All Patents of Type: pencil sharpeners |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 174,777 | Mar. 14, 1876 | A.G. Buzby | Pencil Sharpener | pencil sharpeners |
| 471,216 | Mar. 22, 1892 | T. Foy | Pencil Sharpener | pencil sharpeners |
| 471,435 | Mar. 22, 1892 | O.H. Robinson | Pencil Sharpener | pencil sharpeners |
| 593,093 | Nov. 02, 1897 | H.A. Guhl | Apparatus for Sharpening Pencils | pencil sharpeners |
| 597,643 | Jan. 18, 1898 | W.F. Garrett | Pencil Sharpener | pencil sharpeners |
| 700,071 | May 13, 1902 | E.L. McDivitt | Pencil Sharpener | pencil sharpeners |
| 755,917 | Mar. 29, 1904 | E.L. McDivitt | Pencil Sharpener | pencil sharpeners |
| 832,054 | Oct. 02, 1906 | E.N. Gilfillan | Pencil-sharpener | pencil sharpeners |
| 868,028 | Oct. 15, 1907 | C.C. Spengler | Pencil Sharpener | pencil sharpeners |
| 889,056 | May 26, 1908 | C.C. Spengler | Pencil-sharpener | pencil sharpeners |
| 1,330,105 | Feb. 10, 1920 | W.A. Whitney | Pencil Sharpener | pencil sharpeners |
