Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5255717 | System for removing a plug from a heat exchanger tube | Lawrence A. Nelson, George D. Fulmer, Robert F. Keating | 1993-10-26 |
| 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 |