Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866761 | Automatic meter reading system | Raymond J. Thornborough, Walter L. Probert, Dennis L. Wachs, Donald H. Strobel | 1989-09-12 |
| 4817131 | Automatic meter reading system | Raymond J. Thornborough, Walter L. Probert, Dennis L. Wachs, Donald H. Strobel | 1989-03-28 |