Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5152346 | Method and apparatus for extinguishing oil or gas well fires | — | 1992-10-06 |
| 5009685 | System for improving the work environment in a contaminated room | John A. Graham | 1991-04-23 |