Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5907958 | Refrigerator water filter | Donald A. Coates, Robert C. Russell, Kenneth E. Morris, Walton E. Sparks | 1999-06-01 |
| 5715699 | Refrigerator water filter | Donald A. Coates, Robert C. Russell, Kenneth E. Morris, Walton E. Sparks | 1998-02-10 |
| 5707518 | Refrigerator water filter | Donald A. Coates, Robert C. Russell, Kenneth E. Morris, Walton E. Sparks | 1998-01-13 |