Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5297920 | Apparatus and method for removing ballast stones from a roof | Thomas E. Pomerville, Joseph E. Kauffman | 1994-03-29 |
| 4787111 | Selectively-retractable elevated walkway extension | Thomas E. Pomerville | 1988-11-29 |