Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5069446 | Physical rehabilitation device and method | — | 1991-12-03 |
| 4419166 | Method of assembling a filter holder | — | 1983-12-06 |
| 4349572 | Process of recycling animal waste | Efton E. Hatfield | 1982-09-14 |
| 4191654 | Device for holding membrane filter | — | 1980-03-04 |