Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6506693 | Multiple loadlock system | Roger Heyder, Robert E. Davenport | 2003-01-14 |
| 6450750 | Multiple loadlock system | Roger Heyder, Robert E. Davenport | 2002-09-17 |
| 6034000 | Multiple loadlock system | Roger Heyder, Robert E. Davenport | 2000-03-07 |