Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7672637 | Method and system for delivering from a loudspeaker into a venue | David Franklin | 2010-03-02 |
| 6520165 | Nozzle for emitting nitrous oxide for fuel to engines | — | 2003-02-18 |
| 6397037 | Method and apparatus for improving classroom amplification systems and other RF-type amplification systems | David Franklin | 2002-05-28 |
| 5794187 | Method and apparatus for improving effective signal to noise ratios in hearing aids and other communication systems used in noisy environments without loss of spectral information | David Franklin | 1998-08-11 |