Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9587496 | Turbine blade mid-span shroud | David Arthur Butz | 2017-03-07 |
| 9574450 | Turbine blade mid-span shroud assembly | David Randolph Spracher, Kevin Leon Bruce, John Wesley Harris, Jr., William Scott Zemitis | 2017-02-21 |