Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6400675 | Compact disc with a disc tray alignment means | Raymond K. Engelking, Gerald A. Pierson | 2002-06-04 |
| 6304544 | Card compact disc, compact disc interface seat and methods of using same | Gerald A. Pierson, Raymond K. Engelking | 2001-10-16 |