Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5133005 | Line powered pay telephone with power management | Charles Edmund Murphy, Piera G. Kelley, Donald J. Munn | 1992-07-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5133005 | Line powered pay telephone with power management | Charles Edmund Murphy, Piera G. Kelley, Donald J. Munn | 1992-07-21 |