Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4489221 | Telephone line/subscriber equipment disconnect apparatus | Herbert B. Walker, deceased | 1984-12-18 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4489221 | Telephone line/subscriber equipment disconnect apparatus | Herbert B. Walker, deceased | 1984-12-18 |