| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 451/198 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 1,722,388 | Jul. 30, 1929 | C.H. Norton | Method of Grinding Small Cylindrical Objects | grinding machines | |
| 1,919,144 | Jul. 18, 1933 | C. Booth | Grinding Machine | grinding machines | |
| 5,245,789 | Sep. 21, 1993 | S.C. Rees, D.S. Pusateri | Knife sharpener | ||