Patents per Year
Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9994246 | Cart transporting apparatus | Andrew Dvorak | 2018-06-12 |
| 9393978 | Utility machine with dual-mode steering | Andrew Dvorak | 2016-07-19 |
| 9010771 | Utility machine with dual-mode steering | Andrew Dvorak | 2015-04-21 |
| 8870211 | Cart transporting apparatus | Andrew Dvorak | 2014-10-28 |
| 8684373 | Cart moving machine | — | 2014-04-01 |
| 8360459 | Cart transporting apparatus | Andrew Dvorak | 2013-01-29 |
| 7857342 | Hitch assembly | James Wiff | 2010-12-28 |
| 7571914 | Push-pull cart collection device and conversion assembly | Daniel Johnson, James Wiff | 2009-08-11 |
| 7549651 | Cart coupler assembly for cart collection machines | Daniel Johnson | 2009-06-23 |
| 7533742 | Bed transfer system | Daniel Johnson | 2009-05-19 |
| 7493979 | Power-assisted cart retriever with attenuated power output | Daniel Johnson, James Wiff | 2009-02-24 |
| 7389836 | Power-assisted cart retriever with attenuated power output | Daniel Johnson, James Wiff | 2008-06-24 |
| 6880652 | Cart pulling vehicle with dual cable drums and dual torsion springs | Daniel Johnson | 2005-04-19 |