Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6435320 | Solenoid based park brake method | David Drennen, Patrick A. Mescher, Harald Klode | 2002-08-20 |
| 6024422 | Large displacement variable pitch screw-driven system | David Drennen, Ryan Lovell Wright | 2000-02-15 |
| 5855255 | Electric drum brake | Curtis Scott | 1999-01-05 |
| 5785157 | Park brake apparatus for vehicle electric brake | Curtis Scott, William Frank Borchers | 1998-07-28 |
| 4821851 | Damper with optimized adjustable valving for vehicle ride control | William C. Kruckemeier, Wayne V. Fannin | 1989-04-18 |
| 4539955 | Idle speed control device for internal combustion engine | Robert E. Wilson | 1985-09-10 |
| 4393319 | Electric motor powered actuator | — | 1983-07-12 |
| 4333026 | Stepping motor | Larry R. Miller | 1982-06-01 |