Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4706287 | Stereo generator | David E. Blackmer | 1987-11-10 |
| 4680796 | Sound encoding system | David E. Blackmer | 1987-07-14 |
| 4589129 | Signal decoding system | David E. Blackmer | 1986-05-13 |