Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5542650 | Apparatus for automatically cleaning smelt spouts of a chemical recovery furnace | Greg Watson, Daniel R. Higgins, Robert B. Hill | 1996-08-06 |
| 5414887 | Apparatus for cleaning air ports of a chemical recovery furnace | Daniel R. Higgins, Kenneth A. Pingel | 1995-05-16 |