Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5731552 | Speaker system with sound absorbing diaphragm | — | 1998-03-24 |
| 5732145 | Speaker system and device rack arrangement | — | 1998-03-24 |
| 5550926 | Overlap sound case | — | 1996-08-27 |
| 5312019 | Dispenser having a refillable cup | — | 1994-05-17 |
| 5231672 | Plane-surfaced waved out-diffusion triangular beam-typed resonant board | — | 1993-07-27 |
| 5212734 | Shoulder-mount speaker and audio equipment | — | 1993-05-18 |
| 5207250 | Pollutant-proof contractible container | — | 1993-05-04 |
| 5204501 | Synchronous common polar resonant wall type speaker cabinet | — | 1993-04-20 |