| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 451/272 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 534,470 | Feb. 19, 1895 | G.H. Fowler | Harvester-knife grinder | sharpeners | |
| 2,142,923 | Jan. 03, 1939 | R.P. Stocking | Drill grinding machine | drill grinders | |