| | ||
| Home| FAQ | Search:Advanced|Person|Company| Type|Class | Login | |
| Quick search: | ||
| Patents for Lester V. Colwell | |||||
      | |||||
| Number | Date | Patentee | Title | Type | |
| 3,684,673 | Aug. 15, 1972 | L.V. Colwell | Method and apparatus for analyzing and controlling the cleaning operation of an electrochemical grinding device | ||
| 3,697,403 | Oct. 10, 1972 | L.V. Colwell | Electrochemical grinding apparatus | ||