Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5996686 | Heat transfer tubes and methods of fabrication thereof | Petur Thors, Norman R. Clevinger, James T. Tyler | 1999-12-07 |
| 5697430 | Heat transfer tubes and methods of fabrication thereof | Petur Thors, Norman R. Clevinger, James T. Tyler | 1997-12-16 |
| 4915166 | Titanium heat exchange tubes | James L. Cunningham | 1990-04-10 |
| 4729155 | Method of making heat transfer tube with improved outside surface for nucleate boiling | James L. Cunningham | 1988-03-08 |
| 4692978 | Method for making heat exchange tubes | James L. Cunningham | 1987-09-15 |
| 4660630 | Heat transfer tube having internal ridges, and method of making same | James L. Cunningham | 1987-04-28 |
| 4616391 | Apparatus for making heat exchange tubes | James L. Cunningham | 1986-10-14 |
| 4428106 | Method of making double wall tubing assembly | Thomas G. Counts, James L. Cunningham, Karl J. Youtsey | 1984-01-31 |
| 4343350 | Double wall tubing assembly and method of making same | Thomas G. Counts, James L. Cunningham, Karl J. Youtsey | 1982-08-10 |