| All Patents in class 451/450 |
Patents 1 -
15
of 59
      |
| Number | Date | Patentee | Title | Type |
| 41,419 | Feb. 02, 1864 | J.G. Baker | Improvement in Grinding Saws | tool making machines |
| 189,613 | Apr. 17, 1877 | E.C. Dicey | Improvement in lath machines | lath making machines |
| 220,384 | Oct. 07, 1879 | G.H. Jones | Lathes for Dental Surgery | dental apparatus |
| 288,717 | Nov. 20, 1883 | A.W. McIntyre | Machine for Grinding Car Wheels | grinding machines |
| 342,290 | May 18, 1886 | R. Dutton | Machine for Grinding Mowing Machine Knives | sharpeners |
| 359,964 | Mar. 22, 1887 | R. Dutton | Machine for grinding mower-knives | sharpeners |
| 367,331 | Jul. 26, 1887 | W.F. Barnes | Grindstone-frame | grindstone frames |
| 375,821 | Jan. 03, 1888 | A. Vallentine, E.R. Hyde | Grinding Machine | grinding machines |
| 399,344 | Mar. 12, 1889 | J.M. Petersen | Machine for fitting the ends of band-saws | bandsaw accessories |
| 407,577 | Jul. 23, 1889 | J.D. Cox, Jr. | Machine for back-clearing twist-drills | tool making machines |
| 443,572 | Dec. 30, 1890 | E.C. Goeldner | Dental Grindstone Wetter and Wiper | dental apparatus |
| 465,376 | Dec. 15, 1891 | A. Johnston | Means for Grinding Cutlery or Other Articles | sharpening apparatus |
| 516,146 | Mar. 06, 1894 | C.A. Worden | Machine for sharpening razors, shears, &c. | |
| 575,737 | Jan. 26, 1897 | A.S. Robinson | Machine for grinding knives of cutter-bars | sharpeners |
| 618,293 | Jan. 24, 1899 | G.J. Ridley | Water-feeding device for grinding-wheels | tool grinders |
