Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4537367 | High speed bidirectional magnetic tape transport with constant tension | Raymond E. Avra | 1985-08-27 |
| 4445650 | High speed bidirectional magnetic tape transport with constant tension | Raymond E. Avra | 1984-05-01 |