Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5900587 | Daisy chain cable assembly and method for manufacture | Douglas E. Piper, Sam S. Shasteen, David Clarence Howard, Clifford Leroy DeYoung, William J. Ricket | 1999-05-04 |
| 5532429 | Composite shield jacket for electrical transmission cable | Douglas E. Piper | 1996-07-02 |
| 5387113 | Composite shield jacket for electrical transmission cable | Douglas E. Piper | 1995-02-07 |