| All Patents in class 451/342 |
Patents 16 -
30
of 51
      |
| Number | Date | Patentee | Title | Type |
| 483,288 | Sep. 27, 1892 | A.B. Landis | Grinding-machine | grinders |
| 640,669 | Jan. 02, 1900 | A.B. Landis | Grinding-machine | grinders |
| 642,828 | Feb. 06, 1900 | J.F. Spohn | Grinding or Polishing Wheel | grinder wheels |
| 704,348 | Jul. 08, 1902 | J.N. Lapointe | Grinding-machine | drill sharpening machines |
| 706,265 | Aug. 05, 1902 | C.C. Smalley | Means for securing wheels on shafts | |
| 791,159 | May 30, 1905 | C.H. Norton | Abrasive-wheel mounting | bench or pedestal grinders |
| 845,878 | Mar. 05, 1907 | M. Machacek | Emery grinding-machine | bench or pedestal grinders |
| 1,006,026 | Oct. 17, 1911 | J.M. Thompson | Gear-casing | hand grinders |
| 1,081,465 | Dec. 16, 1913 | J.F. Pribnow | Emery-wheel bench-grinder | bench or pedestal grinders |
| 1,121,671 | Dec. 22, 1914 | G.H. Sawyer | Grinding attachment for hand drills | handheld power tool accessories |
| 1,260,361 | Mar. 26, 1918 | P.E. Gaire | Grinding Machine | grinding machines |
| 1,289,375 | Dec. 31, 1918 | F.E. Bright | Grinding Machine | |
| 1,329,857 | Feb. 03, 1920 | R. Rosner | Milling and Grinding Tool Holder | sharpening tool holders |
| 1,404,339 | Jan. 24, 1922 | E. Bockshe | Grinder-wheel mounting | bench or pedestal grinders |
| 1,577,467 | Mar. 23, 1926 | F.A. Lavedan, F.G. Jeffries | Tool Holder | metalworking machine tool holders |
