Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5228637 | Cassette reel lock control apparatus | — | 1993-07-20 |
| 4928905 | One-way clutch assembly | Wah K. J. Wong | 1990-05-29 |
| 4874143 | Tape cassette having rewind control mechanism | Richard J. Armstrong | 1989-10-17 |