Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8865989 | Kinetic measurement of piano key mechanisms for inertial properties and keystroke characteristics | — | 2014-10-21 |
| 8049090 | Apparatus and method for actuating keyboard mechanisms and evaluating their mechanical properties and stroke characteristics | — | 2011-11-01 |
| 7377848 | Filter purge control for HVAC variable air circulation system | Robert D. Doescher, Alan G. Leupold, Marvin D. Pepper | 2008-05-27 |
| 7338357 | Filter purge control for HVAC fixed air circulation system | Robert D. Doescher, Alan G. Leupold, Marvin D. Pepper | 2008-03-04 |