Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7766070 | Method of operating a die casting reciprocator | David E. Bumpus, Danny S. Alford, Olen L. Marshall | 2010-08-03 |
| 7516774 | Method of operating a die casting reciprocator | David E. Bumpus, Danny S. Alford, Olen L. Marshall | 2009-04-14 |
| 7299855 | Die casting reciprocator safety bar | David E. Bumpus, Danny S. Alford, Olen L. Marshall | 2007-11-27 |