Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6429737 | Method and apparatus for multi-channel digital amplification | — | 2002-08-06 |
| 6107876 | Digital input switching audio power amplifier | — | 2000-08-22 |
| 5474272 | Portable cup holder with adjustable cup retainer | William B. Thompson, Donald L. Rohrs | 1995-12-12 |