Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5376029 | Control valve | David C. Entringer | 1994-12-27 |
| 4639979 | Barbell collar | — | 1987-02-03 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5376029 | Control valve | David C. Entringer | 1994-12-27 |
| 4639979 | Barbell collar | — | 1987-02-03 |