Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5194963 | Dual deck videocassette recorder system | R. Terren Dunlap, John Berkheimer | 1993-03-16 |
| 5177618 | Dual deck VCR and duplicating circuit therefor | R. Terren Dunlap, John Berkheimer | 1993-01-05 |
| 5124807 | Dual deck videocassette recorder system | R. Terren Dunlap, John Berkheimer | 1992-06-23 |