| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents Granted on 1940-10-01 | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 2,216,308 | Oct. 01, 1940 | E.C. Ballman | Method and Means for Balancing Grinding Wheels | wheel truing devices | |
| 2,216,550 | Oct. 01, 1940 | H. Ernst | Machine Tool Control Mechanism | milling machines | |