Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7136497 | Acoustical switch for a directional microphone | — | 2006-11-14 |
| 6972386 | Digital pulse generator and manufacturing method thereof | — | 2005-12-06 |
| 6861604 | Push button switch | — | 2005-03-01 |
| 6630639 | Port switch as for a hearing aid device | — | 2003-10-07 |
| 6028502 | Potentiometer detent | — | 2000-02-22 |
| 5990425 | Programmable electrical switch | — | 1999-11-23 |
| 5975716 | Mounting bar for spacing indicator lights used in electronic equipment | John A. Trine | 1999-11-02 |
| 5588064 | Hearing aid battery cover switch | Randall W. Roberts | 1996-12-24 |
| 5250926 | Potentiometer with improved seal | — | 1993-10-05 |