Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6758522 | Apparatus and method for varying coefficients of friction in a variable apex back support | James T. Ligon, Sr., Stephen Porter | 2004-07-06 |
| 4995582 | Anti-skid reinforcing plate | — | 1991-02-26 |
| 4708624 | Washer cutting apparatus | — | 1987-11-24 |
| 4617849 | Washer cutting procedure | — | 1986-10-21 |