Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5297920 | Apparatus and method for removing ballast stones from a roof | Mathew J. Pacek, Joseph E. Kauffman | 1994-03-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5297920 | Apparatus and method for removing ballast stones from a roof | Mathew J. Pacek, Joseph E. Kauffman | 1994-03-29 |