| All Patents in class 451/340 |
Patents 16 -
30
of 59
      |
| Number | Date | Patentee | Title | Type |
| 945,463 | Jan. 04, 1910 | A.B. Landis | Machine for grinding cutters and reamers | grinders |
| 1,083,452 | Jan. 06, 1914 | N.C. Markham | Grinder and Polisher for Car Journals | grinding machines |
| 1,113,650 | Oct. 13, 1914 | W.A. Kelsey | Tool Holder | sharpening tool holders |
| 1,257,549 | Feb. 26, 1918 | W.S. Thomson | Bearing Guide for Grinding Machines | |
| 1,259,132 | Mar. 12, 1918 | E. Ritz, Jr. | Portable electric tool | handheld grinders |
| 1,265,606 | May 07, 1918 | F.C. Busch | Chucking device | turret lathes |
| 1,266,848 | May 21, 1918 | F.A. Brassill, O.W. Nilson | Grinding Machine | |
| 1,268,961 | Jun. 11, 1918 | E.T. Gorham | Grinding Machine | |
| 1,274,591 | Aug. 06, 1918 | C.E. Quimby | Grinder | |
| 1,277,377 | Sep. 03, 1918 | R.L. Carter | Sanding-machine | oscillating spindle sanders |
| 1,567,442 | Dec. 29, 1925 | F.S. Hyland | Grinder | hand grinders |
| 1,575,307 | Mar. 02, 1926 | A.B. Bachmann | Flexible-shaft bench grinder | flexible shafts |
| 1,662,078 | Mar. 13, 1928 | O. Severson | Method of and Machine for Grinding Fine-Tooth Hobs | hob grinding machines |
| 1,683,859 | Sep. 11, 1928 | F.P. Brown | Grinding machine | |
| 1,695,759 | Dec. 18, 1928 | P. Conradson | Grinding Machine | grinding machines |
