Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5598930 | Shale shaker screen | Jeffrey E. Walker, Charles N. Grichar, Kenneth W. Seyffert, Guy L. McClung, III | 1997-02-04 |
| D377656 | Screen | Kenneth W. Seyffert | 1997-01-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5598930 | Shale shaker screen | Jeffrey E. Walker, Charles N. Grichar, Kenneth W. Seyffert, Guy L. McClung, III | 1997-02-04 |
| D377656 | Screen | Kenneth W. Seyffert | 1997-01-28 |