Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7260320 | Electric heat tracing | Dieter Spornitz | 2007-08-21 |
| 6642487 | Heating arrangement | — | 2003-11-04 |
| 4733057 | Sheet heater | Chester Ledlie Sandberg | 1988-03-22 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7260320 | Electric heat tracing | Dieter Spornitz | 2007-08-21 |
| 6642487 | Heating arrangement | — | 2003-11-04 |
| 4733057 | Sheet heater | Chester Ledlie Sandberg | 1988-03-22 |