| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| All Patents in class 451/217 | |||||
      | |||||
| Picture | Number | Date | Patentee | Title | |
| 1,323,452 | Dec. 02, 1919 | S.A. Cogsdill | Machine for Grinding Tools | ||
| 1,904,304 | Apr. 18, 1933 | R.E. Flanders | Method and Machine for Grinding Chasers | ||
| 2,099,724 | Nov. 23, 1937 | S.A. Cogsdill | Machine for Grinding Tools | ||
 | 2,413,436 | Dec. 31, 1946 | O.W. Dawson | Grinding Machine | |