Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883983 | Switching system for plural load circuit | David T. Llewellyn | 1989-11-28 |
| 4843198 | Burner control device and electrical switch unit assembly, parts therefor and methods of making the same | — | 1989-06-27 |