Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4646769 | Precipitator cleaning tool for fossil burning installation | Errol O'Brien, Martin Placko | 1987-03-03 |
| 4615487 | Hydrocannon system for cleaning power plants | Errol O'Brien, Martin Placko | 1986-10-07 |