Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5025466 | Telephone test instrument | Lawrence D. Hillogoss, David Van Winkle, Myron C. Butler | 1991-06-18 |
| 4706271 | Communication lines with terminate and leave capability-DC alarm bridge | Lawrence O. Hilligoss | 1987-11-10 |
| 4661969 | Communication lines with terminate and leave capability-VF data bridge | Myron C. Butler, Lawrence O. Hilligoss | 1987-04-28 |
| 4639557 | Remote testing system for electrical circuits | Myron C. Butler, Lawrence O. Hilligoss | 1987-01-27 |
| 4371751 | Automatic telephonic user emergency message transmitting apparatus | Lawrence O. Hilligoss | 1983-02-01 |