Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5451937 | Universal generator interface module | John A. Olson, Donald H. Strobel | 1995-09-19 |
| 4866761 | Automatic meter reading system | Raymond J. Thornborough, Dennis L. Wachs, Donald H. Strobel, William L. Kidder | 1989-09-12 |
| 4817131 | Automatic meter reading system | Raymond J. Thornborough, Dennis L. Wachs, Donald H. Strobel, William L. Kidder | 1989-03-28 |