Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4823386 | Addressable subscriber cable television system | Lewis D. Dumbauld | 1989-04-18 |
| 4475123 | Addressable subscriber cable television system | Lewis D. Dumbauld | 1984-10-02 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4823386 | Addressable subscriber cable television system | Lewis D. Dumbauld | 1989-04-18 |
| 4475123 | Addressable subscriber cable television system | Lewis D. Dumbauld | 1984-10-02 |