Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4704515 | Method for supplying electrical power to proximity-effect heat-tracing circuits | — | 1987-11-03 |
| 4571487 | Methods and apparatus for supplying electrical power for proximity effect heat-tracing | — | 1986-02-18 |
| 4564747 | Methods and apparatus for detecting abnormalities in proximity effect heat-tracing circuits | — | 1986-01-14 |