Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D512333 | Digital toning instrument | Lars E. Blacken, Wayne S. Hoofnagle, Sena E. R. Janky | 2005-12-06 |
| D511700 | Tone-generating probe | Sena E. R. Janky, Wayne S. Hoofnagle | 2005-11-22 |
| 6318687 | Accessory mount | Wayne S. Hoofnagle, Peter Adam | 2001-11-20 |
| D399150 | Electrical tester | Steven W. Fisher, Brian S. Aikins | 1998-10-06 |
| 5206796 | Electronic instrument with EMI/ESD shielding system | Bradley H. Thompson, Brian S. Aikins | 1993-04-27 |
| 5122627 | Asymmetrical electrical switch actuator | — | 1992-06-16 |
| 4940204 | Instrument having flexible stand | Michael D. Nelson, Heimen Wong | 1990-07-10 |