Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4467270 | Automatic departure test unit for cab signal equipment | Charles E. Janney | 1984-08-21 |
| 4315208 | Regulated power supply having its d.c. voltage source selectively supplemented by a d.c. to d.c. converter | John O. G. Darrow | 1982-02-09 |