Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8025474 | Battery-changing vehicle with cantilevered boom | Eric Douglas Springston, II, John R. Pratt | 2011-09-27 |
| 7938612 | Battery-changing vehicle with cantilevered boom | Eric Douglas Springston, II, John R. Pratt | 2011-05-10 |
| 7220222 | Cart for die transportation | Eric Douglas Springston, II, John R. Pratt | 2007-05-22 |
| 6543986 | Apparatus with upper displacement member for handling articles | Eric Douglas Springston, II, John R. Pratt, John Schoenma ker | 2003-04-08 |
| 6247887 | Apparatus for handling articles | Eric Douglas Springston, II, John R. Pratt, John Schoenmaker | 2001-06-19 |
| 6007396 | Field emitter fabrication using megasonic assisted lift off | — | 1999-12-28 |