Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D289240 | Adjustable work table or similar article | Gordon E. Sylvester, Alvin R. Tilley | 1987-04-14 |
| 4651652 | Vertically adjustable work desk | — | 1987-03-24 |
| D288445 | Terminal housing | Gordon E. Sylvester, Alvin R. Tilley | 1987-02-24 |