Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6871704 | Well shut off device | — | 2005-03-29 |
| 5257699 | Disc screen construction | John W. Fricker | 1993-11-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6871704 | Well shut off device | — | 2005-03-29 |
| 5257699 | Disc screen construction | John W. Fricker | 1993-11-02 |