Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5341719 | Multi-layer composite gun barrel | Stephen J. Bullis, Peter C. Wolff | 1994-08-30 |
| 4669212 | Gun barrel for use at high temperature | Melvin Robert Jackson, Paul A. Siemers | 1987-06-02 |
| 4577431 | Wear resistant gun barrel and method of forming | Paul A. Siemers, Robert W. Kopp, Melvin Robert Jackson, Steven R. Duke, Ying Liu | 1986-03-25 |