Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9903238 | Rotary valve assembly having rotatable throttle and intake assemblies | Joshua Tolbert | 2018-02-27 |
| 9664074 | Variable valve timing device for internal combustion engines utilizing hydraulic valve actuators | Joshua Tolbert, Robert Tracy Tolbert | 2017-05-30 |