Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4490583 | Plural line telephone controller | John Bednarz | 1984-12-25 |
| 4455646 | Pulse code modulated digital automatic exchange | — | 1984-06-19 |
| 4271351 | Cash replacement system and components | — | 1981-06-02 |