Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5097253 | Electronic security device | Eugene A. Eschbach, Jeffrey W. Griffin | 1992-03-17 |
| 4371044 | Simultaneous multigun high density multiphase perforating unit | Roy L. Willig, Harold Airhart, Sr. | 1983-02-01 |