Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5402548 | Duct cleaning apparatus | John Francis Holmes | 1995-04-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5402548 | Duct cleaning apparatus | John Francis Holmes | 1995-04-04 |