Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4399577 | Machine for cleaning grating over barn manure trough | Bobby R. Wigelsworth | 1983-08-23 |
| 4306325 | Vehicle wash equipment | Ronald V. Plummer, Bobby R. Wigelsworth | 1981-12-22 |
| 4305174 | Control system for automatic vehicle wash | Ronald V. Plummer, Bobby R. Wigelsworth | 1981-12-15 |