| All Patents in class 451/143 |
Patents 16 -
30
of 74
      |
| Number | Date | Patentee | Title | Type |
| 513,632 | Jan. 30, 1894 | R. Conrader | Machine for Grinding Spherical or Other Curved Surfaces | grinding machines |
| 544,439 | Aug. 13, 1895 | A.B. Landis | Grinding-machine | grinders |
| 649,317 | May 08, 1900 | A.B. Landis | Grinding-machine | grinders |
| 732,184 | Jun. 30, 1903 | B.M. Hanson | Dimensioning apparatus | measuring tools |
| 734,897 | Jul. 28, 1903 | A.B. Landis | Automatic grinding-machine | grinders |
| 861,739 | Jul. 30, 1907 | A.B. Landis | Grinding-machine | grinders |
| 879,277 | Feb. 18, 1908 | A.B. Landis | Grinding-machine | grinders |
| 883,649 | Mar. 31, 1908 | A.B. Landis | Grinding-machine | grinders |
| 911,210 | Feb. 02, 1909 | C.M. Conradson | Grinding Machine | glass grinding machines |
| 921,717 | May 18, 1909 | A.B. Landis | Grinding-machine | grinders |
| 925,867 | Jun. 22, 1909 | W.L. Bryant | Multispindle metal-grinding machine | grinders |
| 945,464 | Jan. 04, 1910 | A.B. Landis | Universal grinder | grinders |
| 945,465 | Jan. 04, 1910 | A.B. Landis | Grinding-machine | grinders |
| 983,975 | Feb. 14, 1911 | W.L. Bryant | Multispindle grinding-machine | grinders |
| 1,016,751 | Feb. 06, 1912 | A.B. Landis | Grinding-machine | grinders |
