Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9376131 | Modular cart | David Massey | 2016-06-28 |
| 9296405 | Medical equipment cart having a rotary attachment | David Massey | 2016-03-29 |
| 8950522 | Drive unit for propelling a cart forward-and-backward and side-to-side | — | 2015-02-10 |
| 8752659 | Drive unit for a carrier | David Massey | 2014-06-17 |
| 7191854 | Self propelled gurney and related structure confidential and proprietary document | — | 2007-03-20 |
| 7134515 | Utility transport system | — | 2006-11-14 |
| 5845914 | Portable suspension system for highly sensitive equipment | — | 1998-12-08 |
| 4671713 | Wheelchair lockdown device | — | 1987-06-09 |