Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889975 | Self-regulating heater having a heat tape that stops tracking | David Rock, James H. Anderson | 1989-12-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889975 | Self-regulating heater having a heat tape that stops tracking | David Rock, James H. Anderson | 1989-12-26 |