Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829660 | System for removing a plug from a heat exchanger tube | James W. Everett, John B. Gunter, William Woolfolk, Frank Sadofsky, Lawrence A. Nelson +2 more | 1989-05-16 |
| 4816089 | Process for heat treating a heat exchanger tube surrounded by a support plate | Wenche W. Cheng | 1989-03-28 |