Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10786131 | Multi-functional cleaning and floor care system | Robert S. Robinson, Joshua L. Harrell, David W. Lloyd, John T. Richter | 2020-09-29 |
| 8544141 | Cleaning cart systems | David W. Lloyd, John T. Richter, Robert S. Robinson | 2013-10-01 |